Water is our element! - 2019/2020 AERATION WASTE WATER AERATION OXYGEN-ENRICHMENT - LINN Gerätebau
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AERATION
Water is WASTE WATER AERATION
OXYGEN-ENRICHMENT
our element! PUMPS
FISH TRANSPORT
FEEDING
2019/ 2020 CONTROL SYSTEMS
Made in Germany
EQUIPMENT
LINN aqua technology Germany – technology from the Sauerland to all over the world!
For 40 years we have been manufactu- ments from our own trout farm, which ply customers in more than 70 countries
ring effective equipment for fish farming has been family-owned since 1929. A all over the world.
and aquaculture companies – but for greater practical relevance is hardly
many years also effective and economi- possible! This pays off for our customers Test also the know-how of LINN Geräte-
cal aeration technology for the waste – we know what matters – water is our bau – the leading European manufactu-
water sector. In addition, municipal en element! rer for machines for water aeration and
terprises, city administrations, zoological oxygen enrichment of fish farms and
gardens or golf clubs belong to our large Our economical production facility with aquacultures (award of the IHK Südwest-
clientele. As you can see, the field of ap- modern machinery ensures the high falen)!
plication for our equipment is large! quality standard of our equipment. Seve-
ral hundred units per month now leave
We continue to draw the ideas for our our production facility in Sauerland and
equipment and technical develop- are delivered all over the world. We sup- We are there for you – just contact us!
AERATION – Healthy ponds need oxygen!
The oxygen in the supply water is only pond, and can kill any fish present. These Surface aerators
rarely sufficient for the fish population. problems can be overcome and the envi-
This is especially true of ponds with little ronment can be optimised for the fish, by These aerators eject the water above the
natural exchange of water. Here, aeration using LINN floating aerators. water surface, and offer the most effecti-
of the water is essential for the well-being ve form of water aeration, resulting in the
Not only do all LINN aerators enrich the best oxygen input for the energy (power)
of the fish. Pollution of the water by phos-
water with oxygen from the air, they al- consumed.
phates, nitrogen and dead plant mate-
so mix and circulate the water, and expel
rial leads to over-enrichment of the water
noxious gases such as carbon dioxide. Injector aerators
and excessive biological activity, known
They de-acidify pond water, without the
as eutrophication. Injector aerators create a strong, directio-
use of chemicals, and create a rich and he-
nal flow, and work underwater, virtually
Like animals, green plants and algae use althy environment for plants and animals.
silently. However, these aerators are not
oxygen all of the time. However, during They also combat algae, and reduce orga-
as effective as the surface injectors.
daylight, they produce more oxygen than nic sediments. Their various fountain and
they consume, through photosynthesis. water movements enhance the appea- Note: We use state-of-the-art electric mo-
After dark, they no longer produce oxy- rance of ponds and lakes. tors. All data in the catalogue correspond
gen, and compete with other organisms. to the status at time of printing - subject
We distinguish between two types of wa-
This can cause oxygen depletion in the to change without notice.
ter aerators:
3 LINN
Aeration
Aqua-Mini, Aqua-Maxi, Aqua-Hobby
are floating Linn aerators that offer effec- Aqua-Mini Aqua-Maxi Aqua-Hobby
tive aeration but low power usage.They
can be used in a wide range of applica
tions, including fry ponds, cages, small
and hobby ponds. With t hese aerators it is
possible to support the growth of the fish
and o ptimize the environment of the fish.
All aerator models are lightweight and
convenient to use!
Aqua-Mini Aqua-Maxi Aqua-Hobby
Aqua-Mini has a small, adjustable sub- Aqua-Maxi has a robust stainless steel Aqua-Hobby has an encapsulated mo-
mersible motor. Because of the infinitely submersible motor. The pump achieves tor, which is fixed in an aluminium pro-
variable speed controller at the plug,* the great water circulation with low use of tective casing onto the float above the
power of the aerator can be adjusted opti- energy. The fountain pattern is created water surface. It is virtually silent in ope-
mally and tuned in to the size of the pond. by a specially designed conical deflec- ration. The water fountain automatically
The aerators enrich the water with oxy-
This gives a particularly cost-effective and tor. This achieves excellent aeration and cools the motor.
gen and expel waste gases (such as car-
economical continuous operation. The in- a good current away from the machine,
bon dioxide). The water surface is broken Aqua-Hobby has a multitude of applica
take screen (anodised aluminium) exclu- avoiding ‘short-circuiting’.
by waves, thus inhibiting, or even preven- tions. This model offers very effective
des plants and small fish and guarantees
ting the growth of algae. In natural ponds, The float of the Aqua-Maxi has an inte- aeration at a rela tively low price. The
trouble-free operation. The screen basket
the circulation created prevents foul, oxy- gral, practical handle. The screen is stain- stainless steel screen basket (bar spa-
is smooth, easy to clean and available
gen deficient water. The water remains less steel with a standard bar spacing dis cing 9.5 mm – also available with 5.5 or
with 2 or 6 mm slotted-holes.
healthy. Healthy water makes healthy tance of 9.5 mm, with 5.5 mm available to 18 mm spacing) of the Aqua-Hobby has
fish! Aqua-Mini is delivered ready for use with order. a large surface area. It excludes large
10 m of cable and speed controller. It is particles and fish from the pump cham-
In addition, all aerators offer a visually For an extra charge, the Aqua-Maxi
recommended for ponds of area up to a ber. Aqua-Hobby is suitable for
attractive fountain pattern. The range of can be supplied with a speed controller,
maximum of 20 square metres. ponds up to a maximum of
sizes means that there is an ideal aerator which will e
nable the water delivery and
200 square metres (subject
for every size of pond ! So, no energy is capacity to be varied infinitely.*
to stock l evels).
wasted needlessly by having an oversized
Aqua-Maxi is known for its reliable pum-
aerator!
ping and its low susceptibility to clog-
tors
LINN aera ging. This model is recommended for ba-
!
in action sins and natural ponds up to a maximum
Videos at u
of 60 square metres.
* not available for UK Fastening material on page 65
n.e
www.lin
4 LINN
Aqua-Hobby with submersible motor
The stainless steel submersible motor has
been further developed and improved. ADVANTAGES:
The high-quality mechanical seal guaran-
tees long-lasting durability, during conti- l proven in daily use
nuous operation.
l excellent oxygen e
nrichment
Aqua-Hobby with submersible motor
is ideal for operation during winter. It is l low power consumption
visually unobtrusive, and especially sui- l very reliable aerators
ted to natural waters, as only a small part
of the float can be seen when it is not ope- le
asy to transport and install
Aqua-Hobby submersible … for aquaculture and fisheries
rating. Aqua-Hobby with submersible lh
igh quality
The motor of this model hangs under dard bar spacing 9.5 mm – also available motor is light and easy to move and de-
the well-proven square float (as used for with 5.5 mm bar spacing) has been consi- ploy. This aerator is suitable for ponds up
the Aqua-Hobby). The surface area of the derably enlarged. This aerator is less pro- to 200 square metres area (according to
screen (stainless steel screen basket, stan- ne to clogging, making it more reliable! stock levels).
Flow deflector for Aqua Hobby with Technical Aqua-Mini and Aqua-Maxi are not ideal for use in water with suspended silt!
submersible motor Aqua Aqua Aqua-Hobby Aqua-Hobby
Mini Maxi submersible motor
This flow deflector (available as a spare It is possible to fit this to all Aqua-Hobby
part) enables the Aqua-Hobby submer- submersible aerators that have a square Motor rating W 35 – 75 100 150 150 200
sible to be converted from a ‚mushroom‘ float. This deflector is fitted quickly and Power take-up W 35 – 75 130 240 240 380
aerator to a directional-flow aerator, like easily, without tools, and can be removed Voltage V 230 230 230 230 400
the Aqua-Jet. Thus, it can be used to aera- as quickly.
te narrow ponds and channels. Motor rpm 2390 2800 1380 1380 1380
Fountain ø m max. 0.8 1.00 2.00 2.00 2.20
Fountain height m 0.20 0.25 0.50 0.55 0.60
Minimum water depth m 0.30 0.40 0.40 0.50 0.50
Suction depth m 0.70 0.90 1.00 1.00 1.20
Aktive zone ø m 5.00 8.00 12.00 15.00 18.00
Water del m3/h max. 14 22 48 45 65
Dimensions cm ø 33 H 30 ø 48 H 40 60 x 60 x 62 60 x 60 x 40
flow deflector for Aqua Hobby with submersible motor
Weight kg 5 12 15 15 15
5 LINN
Aeration
The angle of expulsion has been chosen
so that waves move outwards from the Aqua-Pilz
aerator, distributing the aerated water The high-performance electric motor in
throughout the pond. Stagnant, oxy- this type of aerator is housed, with its long
gen-poor zones are thus avoided. stainless-steel shaft, in a polyethylene co-
This flow of water away from the appara- ver on the float above the surface of the
tus also ensures that the aerator always water.
draws water low in oxygen from below, From the outside the isolated motor ope-
circulates it and enriches it with oxygen. rates silently, and only the murmur of the
A short-circuit flow is avoided by the ang- stimulated water can be heard.
le of expulsion. Aqua-Pilz comes in two
designs: with a surface motor and with a A large rust-proof inlet excludes fish and
submersible motor. Both types are almost debris from the pump chamber. The
identical in terms of performance, oxygen screen basket is available in a variety of
enrichment and power consumption. mesh sizes.
The submersible-motor design produ- We have been producing Aqua-Pilz aera-
ces a lower and rather broader fountain tors for more than 30 years. This aerator
Floating aerators for still and flowing waters, ponds, lakes, sewerage plants and rain-storage ponds has proven itself a thousand times over
of water, w hile the fountain from the
surface-based-motor version is rather hig- and ensures durability!
The Aqua-Pilz aerator agitates the whole her but more narrow. Only the submersi-
body of the water by means of large-scale ble motor version is suitable for use du-
circulation and a wide, mushroom-sha- ring winter (to reduce the formation of ice
ped fountain. Harmful gases are expelled for example). Both types of Aqua-Pilz are, ADVANTAGES:
as a result of circulating the water. The rip- of course, designed for continuous opera-
ples that are created disturb the surface of tion. The aerators are supplied ready for
the water with the result that there is no use and come with cable and motor-pro- l best possible oxygen-enrichment
heavy formation of algae. tection device. All screen baskets, fittings,
l minimum energy consumption
motor shafts and s crews are made from
The floating Aqua-Pilz aerators dischar- rust-resistant materials. l robust motors
ge the water upwards, as a fountain does,
and in so doing create an attractive wa- l easy to install
Aqua-Pilz
ter feature. The water is stimulated and
circulated with a propeller. The angle of l l ightweight and readily portable
trajectory of the spray and the impact on
the water surface enhances the exchange l high quality materials
of gases with the atmosphere. The gas
filtration and oxygenation is unequalled,
resulting in a healthy fish population.
Fastening material
on page 65 Aqua-Pilz
6 LINN
Aqua-Pilz with submersible motor A specially-designed, high-
performance
axial-pump impeller is mounted on the
With this type of aerator the motor is hou- short motor shaft.
sed underneath the float and is therefore
The water deflector is hydrodynamically
out of sight. The Aqua-Pilz with submer
designed to prevent losses and wasted
sible motor is therefore also perfectly sui-
energy. The deflector distributes the wa-
ted to natural bodies of water. When not
ter, producing a large fountain ring. Inte-
in use only a small part of the attractive
gral notches in the deflector dissipate and
circular float (available in either light blue
water distribution cone break up the water, improving oxygen
or leaf green) is visible.
enrichment even further.
In addition to its excellent oxygen-enrich- a “pot”-type motor with a stainless-steel
ment capability this type of aerator, as a drive shaft and a strong bearing.
result of its uniform discharge, also provi-
In order to maximise the durability of the
des a beautiful backdrop, for example in
Aqua-Pilz with submersible motor motor a double seal with sliding sealer
parks.
ring and a special sealer ring in an oil bath
LINN constructed the robust stain- has been integrated. The minimal needs
less-steel submersible motor (protec- of the sealer unit results in an economi-
tion class IP68) for this purpose. We use cal use of energy and a long service life.
Technical
Aqua-Pilz Aqua-Pilz submersible motor Aqua-Pilz
special version
Motor rating kW 0.25 0.40 0.55 0.75 0.40 0.55 0.75 1.1 0.75 1.1
Power take-up Watt 450 590 760 1100 590 840 1100 1400 1100 1500
Voltage V 230/400 230/400 230/400 230/400 230/400 230/400 230/400 400 230 400 Aqua-Pilz special version
Motor rpm 1380 1380 1380 1380 1400 1400 1400 1400 2900 2900
Fountain ø m 2.40 2.80 3.20 3.70 3.20 3.90 4.50 5.00 6.00 7.00 Aqua-Pilz with submersible motor also has
a stainless-steel screen basket (available in
Fountain height m 0.65 0.75 0.80 0.85 0.55 0.60 0.60 0.70 1.60 2.00
a variety of mesh sizes) to prevent fish and
Minimum water depth m 0.50 0.60 0.60 0.60 0.60 0.60 0.65 0.65 0.65 0.65 plants entering the pump chamber.
Suction depth m 1.00 1.25 1.50 2.00 1.50 2.00 3.00 3.50 3.00 3.00 We can offer a special version of the
Active zone ø m 15.00 20.00 25.00 35.00 25.00 30.00 45.00 55.00 30.00 45.00 Aqua-Pilz submersible with a higher
fountain. This ornamental version has a
Water del m3/h 75 120 150 240 125 160 240 300 200 250
lower oxygen transfer rate, but creates
Dimensions cm ø 80 H 75 ø 80 H 65 a very beautiful water feature for ponds
Weight kg approx. 30 approx. 30 and lakes!
7 LINN
Aeration
The Aqua-Wheel aerator is available in a Power from the motor is transmitted by
variety of sizes to suit individual require- a simple tooth belt drive (except the 0.25
ments. Common to all sizes is the excep- kW, w here a gear motor is used). This re-
tionally buoyant float. With Aqua-Wheel, sults in reliable operation, long life and
we have made ease of use a priority. minimal energy consumption.
Aqua-Wheel is relatively lightweight, The wheels are connected to a one-piece
so making it easy to install in the desired stainless steel shaft held by sealed ball-
position. Practical carrying handles are bearings. For the mountings, shafts and
moulded directly onto the sides of the screws, only stainless steel is used. The
float. float and the motor cover are made of
Fastening and anchoring could not be robust, UV-resistant polyethylene.
easier. This can be achieved either by me-
ans of a fastening rope in the form of a V,
or by a single rope attachment, or even by
a locking mechanism on rods. This allows
for assembly and dismantling on your
pond.
Aqua-Wheel 0.55 kW
Aqua-Wheel Materials
Aqua-Wheel is driven with a high quali-
for better flow through The Aqua-Wheel paddle-wheel aerators ty, slow running electric motor (IP55). The Aqua-Wheel 0.25 kW
and blockage-free work by considerably increasing the sur motor is mounted above the water sur
oxygen enrichment face area of the water, giving much im- face.
in ponds, lakes, canals proved exchange of gases b etween the The paddle wheel has been specially de-
and tanks. air and water. They do this by breaking veloped for aeration function, maximi-
the water into tiny droplets and flinging sing both the transfer of oxygen, and the
them u p into the air. The droplets are then dispersal of waste gases. The shape of the
able to take up oxygen and discharge to wheel and the paddles guarantee opti-
the a tmosphere polluting gases, such as mum water circulation and distribution
carbon dioxide. An added benefit is the with minimum power requirements. Its
design creates a powerful current, ma-
tors increased circulation of the water, which
LINN aera n! distributes the o xygen-enriched water. king this aerator especially valuable whe-
in actio t re flow is required.
Videos a u Aqua-Wheel requires almost no main-
n.e
www.lin tenance. The paddle wheels turn slow- The paddles are robust and durable, and
ly, and are only slightly submerged in can be replaced quickly and easily. Aqua-
the water, so in most cases a protective Wheel is supplied ready to use, complete
screen is not required. motor with belt drive with cable and motor-protection-device.
8 LINN
Screen protection
Where fish are stocked very densely, in A possibility in the case of dense stocks ADVANTAGES:
spawning ponds or ponds with young is to use stainless steel screen-baskets
fish, the fish might sustain injuries from (mesh size 9.5 or 5.5 mm), available for l best possible oxygen-enrichment
the paddle wheels. the 0.25, 0.55 and 1.1 kW sizes. Due to the l best possible water-circulation
large water flow, these screen-baskets
are self-cleaning and remain virtually free l non-clogging
from clogging. l convenience and low maintenance
l rating adjustable (size 0.55 kW)
screen protection l ready for use
0.25 kW 0.37 kW
l minimum energy-consumption
0.55 kW
Technical
Motor rating kW 0.25 0.37 0.55 (0.40) 1.1
Paddle Wheels 1 2 2 4
Float U-Schwimmer T-Schwimmer U-Schwimmer U-Schwimmer
Power take-up W 360 580 840 (600) 1400
Voltage V 230/400 230/400 230/400 230/400
Motor rpm 1400 920 920 920
Paddle wheel revolutions rpn 138 150 190 190
Water ejection horizontal m 1.5 1.6 1.8 (1.6) 2.0
Water ejection vertical m 1.20 1.2 1.5 (1.4) 1.50 1.1 kW
Water flow speed m/sec* 0.4 0.6 0.6 0.8
Minimum water depth m 0.25 0.25 0.30 0.50
Suction depth m 0.90 1.0 1.5 (1.0) 1.8
Active zone m 40 55 70 (50) 100
Dimensions cm 100 x 76 x 50 110 x 75 x 46 100 x 110 x 50 100 x 135 x 50
Weight kg 30 35 40 50
*Water flow speed determined at a distance of 8 m.
9 LINN
Aeration
adjustable flow deflector
ADVANTAGES:
Aqua-Jet
l directional water output
Aqua-Jet has a directable jet fountain, and ponds. The stainless submersible motor is
creates a strong flow in the pond. always in the water and constantly cooled l excellent oxygen e
nrichment
Aqua-Jet is very easy to deploy and install. during use. This guarantees a long life and
l l ow power consumption
A fixed installation is unnecessary, as it is maintenance-free operation. Aqua-Jet is
only required to anchor the aerator (using suitable for almost every relatively long l excellent circulation
ropes or chains) to stop it drifting away pond (whether a canal or raceway) or large
and square ponds. l r obust and readily portable
(against the directional outlet). Aqua-Jet … for aquaculture, fisheries,
With the aerator suitably positioned, a canals and ornamental lakes
The robust submersible pump generates a
good flow and thorough circulation of
powerful flow with excellent oxygen trans-
fer. This water circulation strips waste gases
the water can soon be achieved. This is Technical
from the water, including carbon d ioxide, especially important to distribute the
oxygen-enriched water throughout the
Motor rating kW 0.25 0.40 0.55 0.75
and thus discourages algae. The angle of Power take-up W 460 590 850 1100
discharge (trajectory) of the water jet is ad- whole pond or lake. Otherwise, putrefac-
tion can become established in stagnant Voltage V 230/400 230/400 230/400 230/400
justable according to the desired flow, size
of the pond and stock of fish. and oxygen-deficient areas. This can re- Motor rpm 1400 1400 1400 1400
sult in the death of many different orga- Fountain height m 0.50 0.60 0.65 0.80
The robust submersible motor has a uni- nisms (including fish), bad smells and the
quely designed mechanism that gives very Fountain width m 0.90 1.10 1.30 1.60
acceleration of silt deposition.
high efficiency; low electrical consump- Minimum water depth m 0.60 0.60 0.65 0.65
tion but high power output. The motor Aqua-Jet draws water from deep, and Suction depth m 1.40 1.50 2.00 3.00
shaft is made of high-grade stainless steel, consequently draws up and circulates
Active zone m 25 30 50 80
and twin impellers are directly mounted stagnant water. Aqua-Jet comes with a
one-year warranty. Water del ca. m3/h 80 100 140 185
onto it. The arrangement of the axial flow
Weight kg approx. 30
impellers is virtually clog-free. A narrow Aqua-Jet with submersible motor gives
screen option is available for use in fry good flow and high oxygen enrichment. Dimensions ø/Height 80 cm / 70 cm
10 LINNThus, vital oxygen is distributed around
the water, benefitting fish and microbes ADVANTAGES:
alike.
Despite this great circulation, Turbo-Jet l excellent circulation
is virtually silent in operation. l good oxygen-enrichment
Fish are protected from the impeller by a
l easy to transport and install
cage screen, which is effectively self-clea-
ning in operation due to the powerful wa- l r obust quality
ter flow along it.
lw
orks silently
Turbo-Jet can easily be used even in win-
… for ponds, lakes and waste water
ter when the powerful water circulation
will hinder or reduce the formation of ice.
In very low minus temperatures, the air
Turbo-Jet
supply can be interrupted.
The motor housing is made from cast
Water circulator with air diffuser for steel or stainless steel. Other materials
better water flow and more oxygen . . . used are stainless steel and polyethylene.
Turbo-Jet enriches the water with oxy- Turbo-Jet – the flexible and economical
gen and keeps it clean. water circulator and oxygenator.
Turbo-Jet operates silently below the wa-
ter surface. The robust submersible motor Turbo-Jet 0.55 – 1.1 kW
with its directly driven propeller produ-
ces an enormous water circulation with
relatively low energy-consumption. The
Technical
special action of the high-speed motor
ised impeller draws in air, breaking it into Motor rating kW 0.35 0.55 0.75 1.1
thousands of small bubbles. These fine
Turbo-Jet 0.55 – 1.1 kW Power take-up W 470 820 1100 1500
bubbles are injected into and entrained in
the water current where they have a long Voltage V 230 230/400 230/400 400
dwell time. This improves oxygenation of Motor rpm 2900 2900 2900 2900
the water.
Active zone m 30 60 80 90
The special water/air bubble jet is direc-
ted down into the water at an angle. This Water delivery m /h3
50 160 250 300
mixes the whole volume and prevents the Air delivery m /h3
6 15 25 35
formation of dead spots. Weight kg approx. 15 approx. 25
Dimensions ø/Height 48 cm/36 cm 80 cm/60 cm
11 LINNAeration
Aqua-Handy
Aqua-Handy, the handy, portable aerator,
weighs only 12 kg and can be installed
quickly and easily in the chosen place.
This type of aerator is ideally suited to
tanks, circular pools or even small ponds.
In addition, Aqua-Handy is ideal as a spa-
re to be used in emergencies and at peak
periods.
To protect the fish this aerator is equip-
ped with a conical, self-cleaning stainless
comes ready for use complete with ca-
steel screen fixed round the propeller.
ble and plug. The motor has an integral
Aqua-Handy is virtually silent in ope thermal cut-out.
ration, and no splashing occurs.
This aerator works like the ”Turbo-Jet“.
All you have to do is hang Aqua-Han- Air is sucked in along an air pipe onto the
dy in your pool and plug in. The aerator propeller where it is thoroughly aerated
is equipped with a submersible motor below the water surface. Good oxygena
made from stainless steel. The apparatus tion is thus maintained.
Aqua-Handy
Technical
Motor rating kW 0.35 0.45
ADVANTAGES:
Power take-up W 470 660
le
xcellent circulation Voltage V 230 230
l easy and versatile to install Motor rpm 2900 2900
l works silently
Water delivery m3/h 50 90
l lightweight
Air delivery m3/h 6 10
Weight kg approx. 12
Dimensions ø/Height 15 cm / 40 cm
12 LINNWASTE WATER AERATION
For more than 25 years we have also been TURBO-JET waste water is available in Send us your inquiry with the conditions
supplying our aeration units for waste power ratings up to 4.0 kW. The system is of your case of use. The easiest way is to
water applications. Of course – due to the suitable for equipping sewage treatment calculate the number of units and the
harder operating conditions – other ma- plants with a connected load of up to engine power if we know the required
terials are used. 10,000 population equivalents (P.E.). The oxygen input for the plant. If this is not the
price-performance ratio of our system is case, it can usually be calculated accor-
But the basic idea is the same: Simple and
unbeatable wherever decentralised was- ding to the ATV worksheet - we are happy
uncomplicated oxygen input in connec-
tewater ponds and sewage treatment to help.
tion with good mixing of the complete
plants have to be ventilated.
tank or pond volume with floating devi-
ces - without costly and time-consuming TURBO-JET is always an alternative to
installation work. retrofitting ponds or plants when the
oxygen input of the existing aeration
Our waste water aeration system TURBO-
technology is no longer sufficient due to
JET works under the water surface – this is
additional loads. TURBO-JET is also the so-
necessary in the waste water area in order
lution for many industrial applications.
to avoid unwanted odour formation.
13 LINNWaste water
Turbo-Jet waste water The TURBO-JET wastewater aerator, ma-
nufactured in various variants, offers ver-
satility and flexibility, so that an effective
solution can be offered for every waste-
water treatment application, particularly
in rural areas. Our waste water aeration
system TURBO-JET is a handy device
for aeration and circulation in the waste
water sector. The unit is equipped with a
submersible motor, i.e. it works below the
water level. In this way, aerosol formation
and running noises are largely avoided.
The heart of the TURBO-JET wastewater
In addition to the enormous circulation,
aeration system is the aeration unit. The
the directly driven axial display wheel also
main component is the robust submersi-
ensures the desired fine to medium-bub-
ble motor (protection class IP 68). All ma-
ble air-water mixture. This guarantees a
terials have been selected for tough use in
good oxygen input and a large effective
waste water and have proven themselves
zone. By means of additional controls on
over many years.
the air intake system, the ventilation and
circulation processes can be realised al- The motor pot is made of grey cast iron
ternately as required. (GG 25) and is therefore robust and du-
rable. Motor shaft, brackets and screw
In this way, nitrification and denitrifica-
connections are made of stainless steel.
tion processes can also be achieved with
The engine is sealed with a mechanical
little effort. Additional agitators are not
seal in an oil bath (vegetable engine oil).
required. In principle, we supply equip-
ment that is completely ready for opera-
tion and therefore ready for immediate
use. The assembly on site usually only in-
cludes the fastening by means of tensio-
Turbo-Jet 2.5 kW ning ropes and can usually be carried out
without problems by the personnel of the
sewage treatment plant.
Turbo-Jet 2.5 kW
floating version
Turbo-Jet 1.1 kW floating - parallel operation
14 LINNThe foaming of the cavities known from TURBO-JET in floating design is particu-
GFK floats is not necessary with our larly suitable for pools with fluctuating
high-quality floats! water levels, as the propeller immersion
TURBO-JET floating can be optimally depth of floating units is always constant
used for expansion or retrofitting - but and therefore always optimal, while per-
also for original equipment. The floating manently installed units have problems
unit only has to be placed on the waste here.
water, pulled to the desired position with The TURBO-JET floating aerator is also
the aid of stainless steel wire ropes and at- available in some special versions. For
Turbo-Jet 1.1kW - three aerators working
in an oxidation pond
tached to the edge. example, we manufacture a variant with
Then all you need is a connection to the two floats. This device is designed in such
power supply! It couldn‘t be simpler - or a way that it can be inserted into a pool
The vacuum chamber is also made of grey
faster or cheaper. Consider the cost sa- through a 60 cm man hole. Only the two special version - to use in closed tanks with manhole
cast iron. The propeller has been specially
vings by omitting the installation (electri- floats (approx. 20 x 20 x 100 cm) still have
developed by us for „dirty water“ applica-
city connection excluded). to be fixed in the tank! In tanks, this unit
tions. The material used is a particularly
can easily be locked in place with two ver- guide pipes. An additionally mounted
hard bronze alloy (tungsten carbide bron-
tical guide tubes (mounted on the pool stand protects the propeller from dama-
ze). This ensures long operating times.
floor and guided by the handles on the ge when the tank is completely emptied.
Wear and tear on the propeller is hardly
noticeable even after several years of ope- ADVANTAGES: floats). The aerator can float up and down Here, too, you can see how versatile our
according to the water level on these system is!
ration.
l flexible and versatile
The propeller shape was developed in
l minimum energy consumption
such a way that no blockages or deposits
are possible. The free passage in the pro- l good oxygen input Motor rating kW 1.1 2.5 4.0
peller core ensures the addition of air. The l large circulation Power take-up W 1500 3000 5300
dimensioning ensures trouble-free conti- l l ow acquisition costs – Voltage V 400 400 400
nuous operation. fast amortisation Motor rpm 2900
The easiest way to use our ventilation sys- l low maintenance costs Active zone max. m 70 85 100
tem is in a floating version. We supply this Water delivery max. m3/h 300 500 750
l no installation
waste water aerator completely ready for Air delivery max. m3/h 30 60 85
operation. Aeration aggregate and float l no laying of air ducts
Motor case grey cast
form a compact, firmly connected unit. l no construction work
Vacuum-casing grey cast
Practical carrying handles on the float l absolutely winterproof Propeller bronze
allow two people to carry and insert the
l i mmediately usable Air supply stainless steel
unit without lifting gear or the like. The
devices are relatively light and easy to l almost noiseless Float U-float 97 x 76 cm
handle. The float is made of PE plastic as a Dimension/height cm 85 85 90
hollow body and is very robust. Weight kg 45 62 70
Oxygen 0.9 1.8 3.18
enrichment kg/h
15 LINNWaste water
Turbo-Jet stationary 1.1 kW
Turbo-Jet stationary
Turbo-Jet with hinged stainless fixing. The stainless steel support tube is Technical
steel fixing used simultaneously as an air intake tube.
Motor rating kW 1.1 2.5 4.0
For use in closed basins or for attachment TURBO-JET with hinged stainless steel Power take-up W 1500 3000 5300
to existing bridges of failed aeration rol- fixing should be mounted so that the pro-
Voltage V 400 400 400
lers, we manufacture the aeration unit peller works 40-50 cm below the waste
water level. Thus the equipment achie- Motor rpm 2900
with a stainless steel bracket. This version
can also be used for retrofitting or original ves the largest effectiveness and the best Active zone max. m 70 85 100
equipment. Here again we deliver a com- oxygen input. Water delivery max. m /h
3
300 500 750
pletely assembled unit ready for opera- With larger immersion depth of our ven- Air deliverymax. m3/h 30 60 85
tion. tilation aggregate the air intake track de- Motor case grey cast
The aeration unit can be aligned hori- creases. Vacuum-casing grey cast
zontally and vertically by means of the The exact execution of the mounting Propeller bronze
bracket. The unit can easily be removed plate can be adapted to the local condi Air supply stainless steel
for possible maintenance work with the tions.
16 LINNOXYGEN-ENRICHMENT-SYSTEMS
Increasing demands of fish quality, higher very important factor in fish farming. With rate of 1.5 % of the bodyweight. With a ment systems for this purpose. They are
stocking densities, declining water sup- abundant dissolved oxygen, fish growth dissolved oxygen saturation of 10 mg/l (= used directly in the pond, usually floating
ply and the use of high quality, expensive is maintained, food conversion rate is op- 90 % saturated) this formula calculates a like an aerator. LINN systems offer high
feed necessitate more effective oxygen timised and less f aecal waste is generated. production of 1.3 kg trout per litre intake oxygen transfer rates with high dissolu-
transfer methods than surface aerators In addition, fish health improves, and they water. If the dissolved oxygen concentra- tion efficiency.
alone. With surface aeration, it is only are less susceptible to disease. These bene- tion can be increased to 11.1 mg/l (= 100
Comprehensive information and techni-
possible to achieve a maximum of 100 % fits result in cost savings. % saturated) the production will increase
cal data on the different LINN systems ap-
saturation, and then with the expense of to 1.7 kg trout per litre intake water. This
A ‘fish stock formula’ can be found by pear on the following pages.
high energy costs. This is because oxygen corresponds to an increase of 30 %.
referring to the technical literature. From
is only present in air at a low concentra-
this it is possible to calculate the fish stock This example illustrates the profound
tion (about 20 %).
in kilograms per litre of intake water. The effect that oxygen has on the stock of a
This is the reason why the peak demand most important factor when calculating pond, and shows very clearly the poten-
of oxygen in many operations cannot be stock capacity is available oxygen and tial offered by the use of oxygen with ef-
covered any more with surface aerators. oxygen consumption per kg of feed. A fective enrichment systems. Clearly, the
Due to this, a situation of lack of oxygen simple example will readily illustrate the decision to use pure oxygen in fish-farms
(at least temporarily) occurs. During pe- importance of adequate oxygen levels. is cost effective because the environment
riods of low oxygen, feed is poorly dige- Example: a pond at 250 m altitude, sto- for the fish can be 100 % oxygen-satura-
sted. The fish subsist, resulting in little or cked with 10 cm long rainbow trout, wa- ted all year round. LINN Gerätebau has
no growth, and poor health. Oxygen is a ter temperature 10 °C and a daily feeding developed specialised oxygen-enrich-
17 LINNOxygen-Enrichment
LOXY® With the help of this new invention,
LOXY® achieves a very good level of
pressure is required) or with wheels or
brush wheels (disadvantage: a lot of ener-
LINN.eu oxygen enrichment with low energy con- gy is required to move the water) Compa-
sumption. red to these systems, LOXY® has the ad-
THE LATEST GENERATION OF Previous systems worked with ‘bottle- vantage that, due to the rotary mixer, only
OXYGEN ENRICHMENT
necks’ (for example, the venturi nozzle a very small portion of the water needs to
– disadvantage: a relatively high water
LOXY® – motor cover
easy removable
without tools
LINN Germany has been manufacturing This new enrichment system contains
oxygen enrichment systems for 20 years. a novel rotary mixing mechanism wit-
The design brief for the latest development hin the plastic body. This is driven by an
was to produce a robust and reliable sys- electric motor located above the water
tem with a high oxygen transfer efficiency. surface. This mixer propels the water out-
In addition, the new floating device was to wards in the contained system, due to its
be as light, convenient, e asily-serviced and rotation. The resulting fast-flowing water
quickly-deployable as possible. generates a vacuum, and pure oxygen is
drawn in and entrained through a tube in
The development trials were a success,
the mixer, and is distributed in very fine
and LOXY® was born – the latest state-of-
bubbles within the water.
the-art oxygen enrichment system from LOXY® – 0.37 or 0.55 kW
LINN!
18 LINNADVANTAGES: ven!
1000 times pro
l L ow energy consumption –
very efficient
l Pioneering technology
l Safe operation
l Maintenance-free
l L ightweight and compact
l Clog-free
l Great value for the money
LOXY® – bottom side LOXY® – lightweight and compact – easy to install!
be accelerated; no water pressure is re- LOXY® uses a durable, energy-saving
quired. A fluidised bed that lowers energy electric motor (according to the latest IE3
consumption and leads to excellent oxy- standard) with a stainless steel shaft on
gen enrichment is created on the surface which the rotary mixer is directly moun-
of the novel rotary mixer. ted. The drive is thus completely mainte-
nance-free! The electric motor is located
The main plastic body of LOXY® is shaped
in a protective housing on the body base Technical
such that water is sucked up from below
and can be removed easily and quickly.
and exits through an opening on the side. Motor rating kW 0.37 0.55
LOXY® does not need any screens to pro-
Therefore, short-circuiting cannot occur. Power take-up W 540 650
tect the fish or exclude leaves, so clogging
The main body is enclosed by two floats.
within the system is impossible! Voltage V 230/400 230/400
All of the plastic parts are made of poly-
ethylene and are extremely robust. LOXY® is supplied assembled, ready for Motor rpm 1400 1400
use and with a 20 m cable and a motor O2 enrichment l/min 16 25
This elegantly simple LINN development
protection plug. max.
does away with submersible motors, m /h3
1.0 1.5
belt drives and external bearing blocks. Dimensions cm 114 x 94 x 80
Weight kg 45
19 LINNOxygen-Enrichment
Oxyplus works with a comparatively low
pressure difference (max. 0.1 bar). Oxy-
gen-poor water is drawn in and mixed
intensively with the pure oxygen which
has been introduced. An increase in the
surface area of the medium is obtained
by mixing and oxygen is taken up. By this
means, other gases (e. g. Nitrogen) will
also be driven out. These gases escape
through the ventilation pipe of the appa-
ratus with a minimal amount of oxygen.
Water supported by Oxyplus can be en
riched by 4-10 mg/ltr.
LINN enrichment systems makes it possi-
OXYPLUS 0.25 kW
ble to introduce oxygen to water with a
high level of efficiency. Oxyplus is supplied completely self-con-
Oxyplus floats (except for the 0.10 kW tained and ready for use. You simply have
Oxyplus® model), is lightweight, handy and simp- to fit the loose floats (included) and the
le to install in the water. It has a direc- apparatus can then be positioned in the
Enrichment with oxygen in a self-contained system – table current. The inlet and outlet are water. An flowmeter is mounted onto the
positioned on opposite sides – so avoi- oxygen supply, which is attached to the
developed by LINN Germany! apparatus. After having connected the
ding short-circuiting.
apparatus to your power supply, you can
begin.
Linn’s tried and tested Pipe Pumps take
care of water supply with the Oxyplus
A standing apparatus for use in hatcheries, system. The submersible motor’s housing
Mixing Device
circular and small pools. We use an L3 pipe is made entirely of stainless steel, the seal
is produced with a high quality sliding
pump as supply unit onto which the mixing
sealer ring. M
ountings and screws are, of
device is fitted. The height of the mixing device
course, also made from quality stainless
can be custom made in according to the steel.
location requirements (water level).
Oxygen feed The basic housing and the floats are cons-
tructed from synthetic materials and are
robust, easy-care items which contribute
Inlet Outflow to the low weight of the apparatus. Practi-
Oxyplus 0.10 kW cal carrying handles are moulded directly
0.25 kW onto the floats. The inlet requires a screen
20 LINN100 effeciency (%)
efficiency (%) OXYPLUS 0.55 kW
90
80
70
OXYPLUS 0.55/0.75 kW
60
which excludes fish and other floating of water flow through the pool must suit
Oxygen
Oxygen
debris. Internal blockages in the system the capacity of the machine in order to supply
supply
cannot occur. The inlet screen can be achieve optimum results. Speak to us, we 6 7 8 9 10 11 12 13 14 15 16 17 18 19 l/min
supplied in several mesh sizes. Standard will be happy to advise you.
equipment is a stainless steel screen with
Oxyplus does not spray water out of the
9.5 mm bar spacing – for a fry pool, the
stainless steel screen has a bar spacing of
apparatus and runs almost silently. In the ADVANTAGES:
summer months, the water is only slight- Oxyplus – the solution for healthy fish,
5.5 mm and for hatcheries a stainless steel l highly efficient
ly warmed by the apparatus, in winter optimum living conditions and better
screen with bar spacing of 2-3 mm is
only slightly cooled. This is particularly feed conversion! l almost silent
supplied. All Oxyplus apparatus are de
important for winter feeding in water- l lightweight and compact
signed for use directly in the pool. Please
courses fed by spring water!
take into consideration that the volume lp ump grill not susceptible
to blockage
l tested and reliable
Technical
Motor rating kW 0.10 0.25 0.55 0.75
Power take-up W 155 400 800 1100
Voltage V 230 230/400 230/400 230/400
Motor rpm 2900 1400 1400 1400
Min. water depth m 0.90 0.60 0.70 0.70
O2 enrichment l/min 4 9 17 25
suitable max. m3/h 0.24 0.5 1.0 1.5
oxygen Water del ca. m3/h 17 50 110 150
flowmeter
see page 38 Dimensions cm ø 30 ø 105 H 110 100 x 105 x 120
0.55 + 0.75 kW Weight kg approx. 20 35 50
21 LINNOxygen-Enrichment
Oxyjet type 05 + 06 LINN mixing jet
inlet
overflow
O2
Typ 02-03
O2
Oxyjet mounted in the pond
According to the flow to be enriched with
oxygen, Oxyjet is fitted with a suitable
number of jets. Furthermore, Oxyjet is
outlet
flexible for times of low flow – plugs are
supplied to block jets to reduce the flow
capacity. If the water flow increases tem-
Oxyjet porarily, there is an overflow, that by
passes the jet system. LINN mixing jet conventional systems
Oxyjet is an open oxygen input system The outstanding performance of Oxyjet Oxyjet offers effective oxygen enrichment
which is put directly into the pond or is due to patented special jets. Compared without energy or maintenance costs.
channel. The system is ideal for use in re- to conventional jets, a very high gas trans-
circulation complexes where the water fer is achieved. The jets result in a very
must be circulated anyway. Then Oxyjet high bubble detention time in the mixing Technical
circulates the water and enriches it with chamber, and therefore a very high effec
oxygen at the same time. Oxyjet can be tiveness and efficiency. Type 01 Type 02 Type 03 Type 05 Type 06
used wherever there is a hydraulic pres- no. of mixing jets 1 2 3 1 1
sure head of at least 60cm.
Minimum water flow l/s (ca.) 15 30 45 2 4
O2 enrichment max. l/min 10 20 30 1,5 3
Dimensions cm ø 40 H 166 square 85 x 60 x 175 ø 20 H 125
22 LINNPUMPS IN FISH-FARMS AND AQUACULTURE
Fish-farms can use water pumps all over Waste or dirty water is best pumped with Detailed specifications can be found on
the farm. Pond complexes also need a submersible pump, with either layflat the following pages. The Linn compa-
pumps, to circulate water. To pump or spiral-reinforced hose. These pumps ny can offer a specialised pump, for all
ponds out, top them up or return water deliver water under pressure, and lower applications, giving great performance
to filters, low pressure pumps with large diameter hose (eg 50 or 75mm) can be with low energy consumption.
diameter outlets are ideal. used. Even mud can be pumped out of
Of course, we can supply other pump
the pond, trouble-free, with the robust
These portable pumps (pipe pump types, such as high-pressure pumps for
and portable Mud Pump.
L3) work in low-pressure applications, jet-washing, or borehole pumps. Let us
where they offer unrivalled efficiency
To ensure that the pond is complete- know what you need, and we will make
of low energy consumption. Great vo- ly clean, residual mud can be broken you an offer.
lumes of water can be pumped quickly, down with a water jet, and the mud
and with low energy costs up to a maxi- then p umped out of the pond with the
mum 250 cm pressure head. Pipe Pumps Mud Pump. Although Mud pumps have
can g uarantee circulation in ponds and a lower pumping capacity than waste
raceways. For external, non-submersible water Pumps, they have a specially-de
applications, a stationary Pipe Pump is signed pump chamber, which results in
the best option. Here, it is plumbed direct clog-free operation.
into the pipeline.
23 LINNPumps
Pipe Pump L3 – Efficient pipe pumps for
cm
up to 5 m!
Pressure head
500
low water pressure-high volume applications. w type 02B!
Additional ne
480
460
440
420
400
380
360
340
Type 03 – 10 Type 01 / 02 / 02B 320
Pipe pumps are the ideal means for mo- The pumps are protected against ingress 300
ving water at low pressure heads econo- of fish or detritus by a robust screen,
280
mically. They can be used for circulating which also serves as a stand.
water, or pumping-out ponds or tanks 260
All pumps are made to the usual high Linn
quickly! Pipe pumps are designed to
standard with stainless steel screen and 240
move large volumes of water for the mi-
base.
nimum use of electricity, and are the most 220
efficient and economic way to pump wa- The robust submersible motor is perman-
ter at low pressure heads. ently submerged, ensuring trouble-free Type 01 + 02 + 02B Type 03 – 10 200
cooling. The drive is direct – long shafts, Screen distance 9.5 mm Screen distance 9.5 mm 10
05
180
bearings and seals are not required. The pipe pump can either be hung from
the loops provided or positioned easily 160
on the water bed. Installation in the pond 07
Technical *Type 01 is not ideal for use in water with suspended silt! or well is easy.
140
Type 01* 02 02B 03 04 05 06 07 08 10 120
02B
Motor rating kW 0.10 0.18 0.25 0.40 0.55 0.75 0.75 1.1 1.1 1.1 ADVANTAGES: 100
03
Power take-up W 160 280 460 550 700 1050 1400 80
Voltage V 230 230 400 230/400 230/400 400 l minimal energy consumption 08
04
Motor rpm 2900 1400 2800 l quick and flexible to use
60
Water del (max) m3/h 29 56 72 80 100 135 170 150 190 70 40 02
Pressure head cm 0-75 0-90 0-120 0-130 0-150 0-200 0-100 0-260 0-140 140-500 l suitable for many applications 01
20 06
Pipe ø DN 70 100 100 125 150 150 150 150 150 100 l lightweight and robust 10 20 30 40 50 l/s
Weight kg 12 15 25 50 100 150 m3/h
24 LINNPipe Pump S cm
240
220
➨ 200
C 180
➨ C
160
140
B B
A A
120
Pipe Pump S Type 01-03 Pipe Pump S Type 05
100
The new Pipe Pump S (stationary) is ideal It is important to install an inline filter 80
for applications where water needs to be screen, upstream of the pump, for pro-
raised in a closed pipeline, such as in filter- tection purposes. Pipe Pump S is supplied 60
and recirculating systems. Different sizes ready for use, with a 10 m cable and over- 01 02 03 05
are available.The pump is s imple to fit and current motor protection. 40
can pump water up to a maximum height
of approximately 1.5 m. 20
10 20 30 40 50 60 70 80 90 l/s
The stationary pump is equipped with
50 100 150 200 250 300 m3/h
two impellers, like the well known and
successful pipe pump L3. The pump is Technical
installed and fixed securely in the pipe-
line. It is fitted with an integral baseplate Type 01 02 03 05
of stainless steel, making installation easy. Motor rating kW 0.15 0.25 0.75 1.5
The pump is powered by a robust electric Power take-up W 280 450 1000 1900
motor (splash-proof, IP65, not submer Voltage V 230/400 400 400 400
sible). The sealing mechanism is a dou- Motor rpm 1400
ble shaft-sealing ring, and there is a con
venient grease nipple for easy mainte Pipe Pump S Type 05 mounted Water del (max.) l/s 18 22 38 80
nance. m3/h 65 79 137 288
Pressure head cm 0 – 110 0 – 130 0 – 150 0 – 140
Pipe DN 100 125 150 200
Weight kg approx. 12 12 15 40
Dimensions A/B/C cm 53/31/29 80/40/35
25 LINNPumps
Deep pump aerator
… the solution for oxygen enrichment in deeper waters and lakes.
Draws the water from the deeper pond
zones to the surface, enriches it with oxy-
gen and mixes it with water at the sur-
face! This pump also mixes colder deep
water and warmer surface water.
The pump component can be hung
beneath the float down to a depth of
5 m. All that is required is a normal bu-
ried drain pipe of nominal 150 mm dia-
meter. This pipe is available in different The pump used for this aerator is the sa-
lengths, and can be cut according to the me as the Pipe Pump L3. For technical
existing water depth. Simply attach one specification, please refer to the Pipe
end of the pipe on the pump outlet, and Pump details on page 24.
the other to the underside of the float
using the pipe clamps provided. For ad-
ditional security, the pump is attached to
the float by a special steel wire rope (in
cluded).
The deep pump aerator draws water
from deep to the surface. The way the
water is ejected at the water surface de-
pends on the outlet type preferred, se- Type II: Deep pump aerator with water deflector
lected at the time of ordering. The simple
pipe outlet gives a directional jet. As an
alternative, if the conical deflector type Technical
is chosen, the result is a ‘mushroom’-sha-
ped fountain pattern, like that produced Motor rating kW 0,55 0,75 1,1
Type I:
Deep Pump Aerator with directional water jet. by the Aqua-Pilz submersible. Power take-up W 840 1100 1500
Shown complete with pipe (not included). Voltage V 230/400 230/400 400
Motor rpm 1400 1400 1400
Water del. m /h3
115 170 190
Dimensions ø 80 cm (floater)
Weight kg approx. 30
26 LINNSilt removal from concrete ponds Silt-vacuum type I is equipped with one
pump; type II works with two pumps and
two separate floating hoses. In both ty-
pes, the wheels are attached within the
vacuum skids.
Vacuum type III is equipped with a univer-
sal pump (type B1600 – see page 28). The
pump can be quickly and easily attached
to the vacuum skids. The big advantage
of this: for the rest of the time, this pump
can also be used for many other tasks in
fish farming, as it is not permanently atta- Type III
ched to the vacuum skids; instead, it can
be removed quickly and easily. In addi-
Type I Type II tion, the silt-vacuum type III is characteri-
sed by a very large transport capacity and
In ponds and raceways, suspended so- All pond-bottom vacuum cleaners with large holes (65 mm)! The silt-vacuum is
lids, faecal and food wastes settle-out and directly integrated submerged pumps
equipped with large external wheels. This
accumulate on the bed. These organic have a high suction power. Three vacu- silt-vacuum also takes up the fish that are
deposits then decompose and putrefy um-widths are available: 70, 80, or 100 lying on the pond floor and can no longer
by natural means. The by-products of this cm. Use the plug-in operation bars (stain- swim.
putrefaction include hydrogen sulphide. less steel, 2 m long each) to move the silt-
Apart from being toxic, this suppresses vacuum across the bottom of the pond.
the appetite of fish, even when present in The mixture of water and silt is transpor
trace quantities. The deposits also absorb ted from your pond using a floating hose.
large quantities of oxygen. The best idea is to transport it directly into
a silt deposition pond.
The mobile pond-bottom vacuum clea-
ner makes it possible to remove silt from All devices are supplied together with a
stocked ponds. The fish do not need to be 20 m cable and plug. Each pump is equip-
removed and the water does not have to ped with a Storz C coupling, to which the
be drained. This means huge savings in floating hose can be quickly and easily Technical
terms of time and work. connected.
Type I Type II Type III
Motor rating kW 0.75 2 x 0.75 2.2
Power take-up Watt 1000 2000 2700
Voltage Volt 230 230 400
Pump capacity l/min 400 800 1200
Exhaustion dimension cm 70 100 80
Supplied complete with 20 m cable and plug, hose connection, ‚C‘ coupler (without bar and hose).
27 LINNPumps
DOMO Water pump Mud pump
submersible pumps
For flexible and easy use in fish farms we The WPI pump is The Salvador sub-
can deliver robust submersible pumps in suit
able for pum- mersible pump is
different variations. They are applicable ping dirty or specially designed for
for emptying tanks, ponds or reservoirs. groundwater from „ sludge“ applications.
The submersible pumps DOMO are made ponds with admix- The pump has a large
in stainless steel, with mechanical seal and tures up to 10 mm. free passage (50mm)
different propeller for the use in water or The pump is ro- - the pumping of me-
solid-laden wastewater. All types are deli- bust, flexible and dia with coarser so-
verable with or without float switch. can also be used for lids is no problem for
continuous ope this pump.
There are two propeller options. The ration.
standard propeller is made from reinfor- The Salvador sludge
All pumps are supplied ready for use, Pump WPI Mud pump Salvador
ced nylon for use in water, the VX-ver- The motor housing pump has a stainless
complete with 10 m cable and plug. Fi- of the WPI pump is steel outer jacket and
sion has a special vortex propeller (made
re-brigade-couplings are also available. made entirely of cast aluminium. The is equipped with a double jacket cooling
from stainless steel) which is designed to
handle suspended filaments or solids up sealing guarantees long operating times. system. Delivery includes motor protec-
to 50 mm (35 mm for DOMO 7VX). tion and 10 m cable.
Delivery is complete and ready for ope-
ration with 10 m cable and motor protec-
tion plug, incl. fire brigade coupling.
Technical Technical
Dirty Water Muddy water Type WPI Salvador
Pump type DOMO 7 10 15 20 7 VX 10 VX 15 VX 20 VX Motor rating kW 1.8 2.0
Motor rating kW 0.55 0.75 1.1 1.5 0.55 0.75 1.1 1.5 Power take-up kW 2.2 2.8
Power take-up kW 0.7 1.0 1.4 1.9 0.7 1.1 1.2 1.7 Voltage Volt 400 400
Motor 1/min 2850 2800
Voltage V 230/400 400 230/400 400
Suction capacity
Motor rpm 2850 Suction head 2 m m3/h 62 43
Suction capacity 2m 19 34 42 48 16 27 31 41 5 m m3/h 53 36
m3/h 5m 12 22 30 38 9 17 23 90 10 m m3/h 38 21
Max. discharge head m 10.7 10.1 12.7 14.8 9.1 7.7 9.1 11 Max. Discharge head m 14 15
Weight kg approx. 30 30
Connection Inches 1 1/2 2 2 2 1 1/2 2 2 2
Hose connection B B
Weight kg 10 14 15 15 10 14 15 15
28 LINNFISH TRANSPORT SYSTEMS
The trouble-free, and stress-free trans trout. For a 600l tank, this is equivalent to approx. 3.5 bar. The oxygen is supplied to
porting of live fish requires specialist 150 kg of trout, for a water temperature of the diffusers in the tank by oxygen hose.
equipment. This includes the fish trans- 10 °C. For carp species, the capacity can In addition, an oxygen flow meter should
port tanks themselves, and also the be 50 % higher, without problems. be installed between the oxygen supply
oxygen supply equipment. and the diffusers.
To maximise the carrying capacity, it is im-
Selection of the size of transport tank portant to use oxygen, diffused through This arrangement will allow the adjust-
depends on the quantity of fish to be fine-pore diffusers. Where air is used in- ment of the oxygen supply according to
transported, the type of fish, the water stead of oxygen (using 12 V air pumps) the amount of fish in the tank. For exam-
temperature, and the duration of the the carrying capacity is reduced by 50 %. ple, 100 kg of trout need 2 litres of oxygen
journey. per minute, at 10 °C. This doubles, for 200
Where oxygen is used, a pressure-redu-
kg of trout.
As a guide, it is possible to fill tanks with cing regulator is necessary, to step-down
75 % water, and 25 % fish, in the case of the pressure from the oxygen cyclinder to
29 LINNFish Transport
Thermoport 190 litres Thermoport 290 litres Thermoport 600 litres Thermoport 800 litres
Live fish are at risk if unsuitable or inferior The lids of the larger containers (600/
Thermoport – containers are used during transport. 800/1100 litres) are extra large – this
makes it very easy and practical to fish in
Many years ago LINN Gerätebau de
The ideal fish transport tanks veloped the Thermoport fish transport
and out. The locking mechanism is simple
but safe. The proven labyrinth seal seals
for professional fish farmers tank, which eliminates risks to the fish
stock. These economical and well-pro-
without the risk of frost.
and sport fishermen. ven tanks are available in five sizes: 190
– 290 – 600 – 800 and 1100 litres (details
1100 litres on page 32). The containers
are produced in one piece without welds
and consist of food-grade and c hemically
resistant plastic (PE). Consequently, they
are very robust and impact resistant.
30 LINNYou can also read
