Danfoss_DataSheet

8/18/2019 Danfoss_DataSheet

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Desalination of Seawater

Place of operation: Canary Islands Spain

The compact design of the APP pumps

enables new thinking in the design of

conventional water makers. Here the APP

pumps are mounted on top of the membrane

train providing new possibilities for OEMs

to set new standards in system design. This

300 m3 /d ro-skid uses less than 2.3 kW/m3

permeate production.

DKCFN.PB.010.B1.02 / 521B0734 Produced by Danfoss G1 Communication 04.09.MR.JN.na

RO-Solutions

.... setting new standards.

DANFOSS HIGH-PRESSUREWATER SOLUTIONS

Danfoss A/SDK-6430 NordborgDenmark Phone: +45 7488 4325

Telefax: +45 7445 3831E-mail: [email protected]

Danfoss A/S is one of the largest industrial

companies in Denmark, with net sales of

around DKK 15 billion.

We employ more than 18,500 people, and

6,500 of them work in Denmark in 15 dierent

locations.

Danfoss is an international group and a

leader in research, development and pro-

duction for a wide spectrum of dierent

industries.

We produce about 250,000 components

each day at our 59 factories in 21 countries.

The Group’s primary aim is to create quality

of life for our stakeholders and to be a

leader in refrigeration, heating and motion

controls.

Our work is based on our Core Values: Trust,

Passion for Technology, Reliability, Global

Perspective with Local Commitment and

Environmental and Social Responsibility.


Place of operation: Mainland Spain

A decentralized water supply is currently

and will in the future be one of the options

in remote areas. When high-eciency

equipment is built together with the latest

technology, low-power consumption can

be obtained as proven with this 600 m 3 /d

water maker with less than 2.2 kW/m3

power consumption. The pumps are verti-

cally mounted onto the electric motors .


Place of operation: Oil Rigs North Sea

Long service life combined with ATEX

approved APP pumps mounted together

with EX-Proof Zone II motors via stainless

steel bell housings. The light weight and

compact design of the APP pumps make it

cost-eective to maintain and service the

system, as the pumps can be transported

between harbour and oil rig with helicopters

and replaced without any lifting gear or

special arrangements.


2/20

APP 0.6-1.0 specications

Metric measure US measure

Flow APP 0.6 10 l/min 2.6 GPM

APP 1.0 17 l/min 4.5 GPM

Discharge pressure 10 to 80 bar 140-1150 psi

Inlet pressure Flodded to 7 bar Flodded to 100 psi

Pump rpm 1) 700-3000 rpm 700-3000 rpm

Horse power APP 0.6 1.5 kW 2.0 HP

At 80 bar APP 1.0 2.2 kW 3.2 HP

Weight 4.4 kg 9.7 lbs

Inlet port 1 ⁄ 2”BSP 1 ⁄ 2”BSP

Outlet port 1 ⁄ 2”BSP 1 ⁄ 2”BSP

APP 1.8-2.2 specication



APP 2.2 35 l/min 9.2 GPM

Discharge pressure 10 to 80 bar 140-1150 psi

Inlet pressure Flodded to 7 bar Flodded to 100 psi

Pump rpm 1) 700-3000 rpm 700-3000 rpm


At 80 bar APP 2.2 5.5 kW 7.0 HP

Weight 7.7 kg 17 lbs

Inlet port 3 ⁄ 4”BSP 3 ⁄ 4”BSP

Outlet port 1 ⁄ 2”BSP 1 ⁄ 2”BSP

�

�

� �

� �

� �

� �

� �

� �

� �

� �

� �

� �

� �

� �

� � �

Pump rpm

7 0 0

9 0 0

1 1 0 0

1 3 0 0

1 5 0 0

1 7 0 0

1 9 0 0

2 1 0 0

2 3 0 0

2 5 0 0

2 7 0 0

2 9 0 0

3 0 0 0

160

140

F l o w ( l / m i n )

120

100

80

60

40

20

0

40

35

F l o w ( g a l / m i n )

30

25

20

15

10

5

0

Typical flow curves at 80 bar (1160 psi)

APP 10.2

APP 8.2

APP 7.2

APP 6.5

APP 5.1

APP 2.2

APP 1.8

APP 1.0

APP 0.6

APP 5.1-10.2 specications:



APP 6.5 108 l/min 28.1 GPM

APP 7.2 120 l/min 31.7 GPM

APP 8.2 136 l/min 35.4 GPM

APP 10.2 170 l/min 44.9 GPM

Discharge pressure 10-80 bar 140-1150 psi

Inlet pressure Flodded to 7 bar Flodded to 7 bar

Pump rpm 700-1800 rpm 700-1800 rpm


At 80 bar APP 6.5 15 kW 20 HP

APP 7.2 18.6 kW 25 HP

APP 8.2 19 kW 25.5 HP

APP 10.2 26.7 kW 35.9 HP

Weight 32 kg 70 lbs

Inlet port 2) 11 ⁄ 2”VIC. 11 ⁄ 2”VIC.

Outlet port 2) 11 ⁄ 2”VIC. 11 ⁄ 2”VIC.

1) Higher speed available. Please contact the Sales Organisation.2) Other types of connections available on request.

Common material specications

• All wetted parts : Superdublex, polymer, ceramic

• All external parts: Superdublex, 316 SS, plastic

The Natural Choice The Axial Piston Pump (APP) is a positive displacement pump design

originating from oil hydraulics and subsequently redesigned byDanfoss during the last 15 years, to pump tap and seawater. Tens of

thousands of pumps are in operation worldwide proving the

pumps to be among the most cost-eective and reliable pumps for

membrane applications, both as main high-pressure pumps but

also for recovering energy as reversing pumps (motors) in the reject

line. The pumps are made in exotic materials incorporating Duplex

and Superduplex materials as standard.

Danfoss A/S RO-Solutions oers not only High-Pressure Pumps but

also Frequency Inverters, Soft Starters, Valves, Pressure Transmitters

and all kinds of “around-the-pump”accessories, since one of our

goals is to facilitate supply chain optimisation for our customers.

If your business is among the below mentioned applications:

• Seawater Reverse Osmosis

• Brackish Water Reverse Osmosis

• Nanoltration, ultraltration, microltration

• Or even pump and measure low-viscosity corrosive uids

preltered down to 10 micron absolute

... have a look on our homepage www.nessie.danfoss.com/rosolution

With APP pumps from Danfoss you get the following

benets

Low energy consumption

Total ecienciesup to 95 percent – among the most ecient in the

market.

Long service life

Danfoss guarantees service free operation for more than 8,000

hours thanks to two design features:

• No oil lubrication: the medium itself lubricates the pump.

• No need for service on a regular basis:

the mechanical shaft is the only seal in the pump.

Corrosion resistance

All wetted parts of the pump are designed in duplex, super duplex

stainless steel and polymer, ensuring resistance to corrosive and

low viscosity fuids , e.g. seawater and brackish water.

High-pressure operation

Continuous operation at a discharge pressure between 10 and 80

bar (145-1160 psi). Higher discharge pressures are available on

request.

Wide ow rangeOne pump size covers the same ow range as several centrifugal

pumps, because the ow is a linear function of the speed (rpm). The

pumps run at speeds between 700 and 3,000 rpm.

Low pulsation

A design featuring up to nine pistons reduces pressure pulsations

in the discharge line down to 1.5 percent, rendering pulsation

dampers superous addition, and reduceing installing cost.

Compact design

The most compact pump on the market, giving system builders a

free hand to design more compact systems. The pump may also be

directly mounted onto an electrical motor via a bell housing with a

exible coupling.


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521B0850 DKCFN.PD.010.FA2.02 11-2006

DATA SHEETWater Pumps

APP0.6 - 2.5

1. General information

APP0.6, APP1.0, APP1.5, APP1.8, APP2.2 and APP2.5 pumps are designed to supply low viscosity and corrosive fluids under highpressure, eg. in seawater reverse osmosis filtration applications and for high pressure salt water pumping.

The pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so thatlubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required.

All parts included in the pumps are designed to provide long service life, i.e. long service life with a constantly high efficiency andminimum of service required.

The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and thepump displacement, regardless of any counter-pressure.

2. Benefits• One of the smallest and lightest pumps on the market.• Can be powered by a combustion engine provided that a special coupling is used.• Generates insignificant pulsations in the pressure line.• No preventive maintenance required (no periodic service like e.g. change of lubricant and wearing parts).• Long service life. Danfoss guarantees 8000 hours maintenance-free operation.• All parts of the pump are made of non corrosive materials eg. Duplex (SAF 2205/EN1.4462) and

Super-duplex (SAF 2507/EN1.4410) stainless steel and carbon reinforced PEEK.• High efficiency.

1: Shaft sealing 2: Mounting flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve plate 7: Swash plate 8: Cylinder barrel 9: Spring10: Port plate11: Connecting flange12: Housing with bearing

2

45

1 311

12

6 78

10 9


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2 DKCFN.PD.010.FA2.02 521B0850

3. Technical data

Code number 180B3001 180B3002 180B3026 180B3003 180B3004 180B3000

APP pumps APP0.6 APP1.0 APP1.5 APP1.8 APP2.2 APP2.5

Geometric displacement cm3 /rpm (in3 /rpm) 4 (0.24) 6.3 (0.38) 9.3 (0.56) 10 (0.61) 12.5 (0.76) 15.3 (0.93)

Flow (3000 rpm) m3 /h (gpm) 0.6 (2.6) 1.0 (4.4) 1.5 (6.6) 1.7 (7.5) 2.1 (9.2) 2.6 (11.4)

Min. pressure 1) bar (psi) 20 290 20 290 20 290 20 290 20 290 20 290

Max. pressure, cont. 2) bar (psi) 80 (1160) 80 (1160) 80 (1160) 80 (1160) 80 (1160) 80 (1160)

Max. pressure, intermittent 3) bar (psi) 100 (1450) 100 (1450) 100 (1450) 100 (1450) 100 (1450) 100 (1450)

Max. speed cont. 4) rpm 3450 3450 3450 3450 3450 5) 3000

Min. speed cont. rpm 700 700 700 700 700 700

Power requirement at

80 bar and 3000 rpm:kW (hp) 1.9 (2.5) 2.9 (3.9) 4.5 (6) 4.8 (6.3) 6.0 (7.9) 7.2 (9.6)

Weight kg (lb) 5.2 (9.7) 5.2 (9.7) 8,6 (17) 8.6 (17.0) 8.6 (17.0) 8.6 (17)

1) For lower pressure, please contact Danfoss RO Sales Organization. 4) For speeds above 3000 rpm the pump must be2) For higher pressure, please contact Danfoss RO Sales Organzation. boosted at a pressure of 2-5 bar (29.0 - 72.5 psi).3) Intermittent pressure is acceptable for less than 10 seconds per minute. 5) For speeds above 3000 rpm, inspect the pump

after every 4000 hours of operation.

4. Flow at different rpmUsing the diagram shown below, it is easy to select the pump which fits the application best if the flow required and the rotationspeed (rpm) of the pump are known.

Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio isconstant, and the “desired “ flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpmcan be determined as: Desired flow × Rated rpm Required rpm =

Rated flow

5. Power requirements

Pump model Flow Pressure rpm Calc. factor

60 bar 70 bar 80 bar

l/min m3/h gpm 870 psi 1015 psi 1160 psi

APP0.6 10.2 0.61 2.69 1.38 kW 1.61 kW 1.84 kW 2840 475.8

APP0.6 12.3 0.74 3.25 1.66 kW 1.94 kW 2.21 kW 3400 475.8

APP1.0 16.53 0.99 4.37 2.14 kW 2.49 kW 2.85 kW 2840 474.6

APP1.0 19.83 1.19 5.24 2.57 kW 2.99 kW 3.42 kW 3400 474.6

APP1.5 25.11 1.51 6.63 3.21 kW 3.75 kW 4.29 kW 2890 468.6

APP1.5 30.17 1.81 7.97 3.86 kW 4.51 kW 5.15 kW 3470 468.6

APP1.8 26.78 1.61 7.07 3.43 kW 4.00 kW 4.57 kW 2890 463.2

APP1.8 32.18 1.93 8.50 4.12 kW 4.81 kW 5.49 kW 3470 463.2

APP2.2 33.48 2.01 8.84 4.29 kW 5.00 kW 5.71 kW 2900 468.6

APP2.2 40.22 2.41 10.63 5.15 kW 6.01 kW 6.87 kW 3480 468.6

APP2.5 41.94 2.52 11.08 5.07 kW 5.92 kW 6.77 kW 2900 484.8

The power requirements can be determined using one of the following guiding equations:

l/min × bar 16.7 × m3 /h × bar 0.26 × gpm × psiRequired power = [kW] or [kW] or [kW] Calc. factor Calc. factor Calc. factor

0

0,5

1

1,5

2

2,5

3

500 1000 1500 2000 2500 3000 3500

rp m

m

3 / h

APP1.8

APP1.0

APP0.6

APP2.2

APP1.5

APP2.5

1 hp = 0.75 kW

1 kW = 1.34 hp1 gpm = 3.79 l/min1 l/min = 0.26 gpm1 m3 /h = 4.40 gpm1 gpm = 0.23 m3 /h


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521B0850 DKCFN.PD.010.FA2.02 3

6. Inlet pressureWater supply to the pump is either made from a tank placed above the pump or directly from a feed pump. The pressure at thepump inlet (I) must be in the range: 0.5 - 5 bar (7.3 - 72.5 psi).

7. Temperature and corrosion7.1 Operation:

• Fluid temperature: +3°C to +50°C (+37.4°F to 122°F) - dependent on the NaCl concentration• Ambient temperature: +3°C to +50°C (+37.4°F to 122°F)

The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration and

temperature.All critical parts of the APP water pump is made of SAF 2507.If the water pump is operated at high salinity, always flush the water pump with fresh water at operation stop in order to minimisethe risk of crevice corrosion.

NaCl vs. temperature

7.2 Storage:

• Storage temperature: -40°C to +70°C (+37.4°F to 122°F) – provided that the pump is drained of fluid and stored”plugged”.

Antefreeze protection is required at temperatures below 2°C. Danfoss recommends using Dowcal N from Dow ChemicalCompany or Chillsafe mono propylene glycol from Arco Chemical Company.

8. Noise level

The chart indicates the noise level in dB(A) measured at a distance of 1 m from the pump in a reverberation room.

Type 60 bar (870 psi)

1500 rpm

60 bar (870 psi)

3000 rpm

80 bar (1160 psi)

1500 rpm

80 bar (1160 psi)

3000 rpm

APP0.6 70 73 74 77

APP1.0 73 75 74 77

APP1.5 75 76 73 77

APP1.8 75 76 73 77

APP2.2 75 76 73 77

APP2.5 76 77 74 78

Generally, noise will be reduced if speed is reduced and vice versa. Use flexible hoses in order to minimize vibrations and noise.

Since the pump is typically mounted on a bell housing or frame, the noise level can only be determined for the complete unit(system).

It is therefore very important that the pump is mounted correctly on a frame with dampers to minimize vibrations and noise.

The noise level is influenced by:• The speed of the pump, high rpm create more noise than low rpm• Rigid mounting of the pump generates more noise than flexible mounting• Pipe mounting direct to the pump increases the noise level compared to a flexible hose

9. FiltrationAs water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakagerates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear ofthe pump.

The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridges

rated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typicallyhave only 90% filtration efficiency. This means that for each 100,000 particles reaching the filter, 10,000 particles pass through itcompared to only 20 particles in a filter with an efficiency of 99.98%.

For more information on the importance of proper filtration, please consult our publication “Filtration” (code number 521B0861),which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter.

904L / SAF 2205


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4 DKCFN.PD.010.FA2.02 521B0850

10. Dimensions10.1 Pump

Description APP0.6 and APP1.0 APP1.5, APP1.8, APP2.2 and APP2.5

A Port position, mm (in) 15.9 (0.63) 18.8 (0.74)

B Port position, mm (in) 15.9 (0.63) 21.0 (0.83)

C mm (in) Ø 88 (3.5) Ø 105 (4.1)

D mm (in) 131 (5.2) 166 (6.5)

E Parallel key, DIN 6885, mm (in)5 × 5 × 20

(0.20 × 0.20 × 0.78)5 × 5 × 20

(0.20 × 0.20 × 0.78)

F Bleeding M6, Hexagon AF = 5 mm M6, Hexagon AF = 5 mm

I Inlet connection BSP G½”; 15 (0.59) deep BSP G¾”; 15 (0.59) deep

O Outlet connection BSP G½”; 15 (0.59) deep BSP G½”; 17 (0.67) deep

Pump mounting flange SAE A 2 SAE A 2

10.2 Complete unit

Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm) IEC Electric motor

APP0.6 200 245 90 140 100 265 100 131 1.5 kW, FPA 90S-2

APP1.0 200 245 90 140 125 290 100 131 2.2 kW, FPA 90L-2

APP1.5 250 280 100 160 140 325 120 166 3.0 kW, FPA 100L-2

APP1.8 250 302 112 190 140 340 120 166 4.0 kW, FPA 112M-2

APP2.2 300 342 132 216 140 390 144 166 5.5 kW, FPA 132S1-2

APP2.5 300 342 132 216 178 430 144 166 7.5 kW, FPA 132S2-2


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521B0850 DKCFN.PD.010.FA2.02 5

11. Installation11.1 Mounting

The figure below illustrates how to mount the pump and connect it to electric motor/combustion engine.

A: Flexible couplingB: Bell housingC: Motor shaft

If alternative mounting is required, please contact Danfoss Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly.

Note: Any axial and/or radial loads on the shaft must be avoided, see “User guide” (521B0888).

A CB

Min. 3 mm

The pump should be connected to the rest of the plant with a flexible hoses.

11.2 Open-ended systems with water supply from tank

In order to eliminate the risk of cavitation, a positive inlet pressure should always be maintained by observing the followingguidelines:1. Place the tank (1) above pump inlet (water level in tank should always be above the pump).2. Place a filter (2) in the water supply line in front of the tank.3. Dimension the inlet line (3) with minimum pressure drop (large internal diameter, minimum length of pipe, avoid bends and

fittings with small internal diameter).

11.3 Open-ended system with direct water supply

In order to eliminate the risk of cavitation, a positive inlet pressure is always to be maintained at min. 0.5 bar (7.3 psi) and max. 5 bar(72.5 psi).1. Place the filter (1) in the water supply line in front of the pump.2. Place a monitoring pressure switch (2) set at min. 1 bar (14.5 psi) between filter and pump inlet. The monitoring switch must

stop the pump at pressures lower than 1 bar. (14.5 psi) At speeds above 3000 rpm - use 2 bar (29 psi) as set point.


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6 DKCFN.PD.010.FA2.02 521B0850

11.4 RO system with APP pump

1. For easy system bleeding and flushing, apply a bypass non-return valve (1) in parallel with the APP pump.2. Place an inlet filter (2) in front of the APP pump (3). Please consult section 9, “Filtration” for guidance on how to select the

right filter. Throughly clean pipes and flush system prior to start-up.3. Place a monitoring pressure switch (6) set at min. 1 bar between filter and pump inlet. The monitoring switch must stop the

pump at pressures lower than 1 bar (14.5 psi). At 3000 rpm - use 2 bar (29 psi) as set point.4. Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/

connections, and fittings with small pressure losses).5. In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet (4) is always to be maintained at min.

0.5 bar (7.3 psi) and max. 5 bar (72.5 psi). At speeds above 3000 rpm the pressure at the inlet of the water pump must be min.2 bar (29 psi).

6. Use flexible hoses (5) to minimize vibrations and noise.7. Install a safety valve (7) in order to avoid system damage as the Danfoss APP pump creates pressure and flow immediatelyafter start-up, regardless of any counter-pressure.

M

Brine

Permeate APPFeed

12. ServiceProvided that the pump has been running according to the Danfoss specifications on pre-filtration, pressure, and rotation speed,Danfoss guarantees minimum 8000 hours operation, however max. 18 months from date of sale.

To prevent a total and disastrous breakdown, Danfoss recommends a pump inspection after max. 8000 hours – at which any wornparts must be replaced.

Note: It is always recommended to replace pistons and shaft sealing if another service-free period is to be obtained.

If the pistons are not replaced, more frequent inspection is recommended.

The APP pump is made of duplex/super duplex materials with fine corrosion properties. However, it is always recommended toflush the pump when the system is shut down.

The shaft sealing in the APP pump is made of AISI 316. At high TDS and high water temperature, the service life of the shaft sealingwill be reduced. For these applications it is recommended to replace the shaft sealing after approx. 4000 hours operation.

12.1 Periodic maintenance

Water acts as lubricant in the APP. Thus there is no oil in the pump.

By operation below the curve for SAF 2507 in the figure in section 7.1, no parts are expected to be replaced within the first 8000hours of operation.

12.2 Repair

In case of irregular function of the APP, please contact the Danfoss RO Solutions Sales Organisation.

2

5

6

3

1

5 4

7


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521B0851 DKCFN.PD.010.FB1.02 11-2006

DATA SHEETWater PumpsAPP5.1 - 10.2


APP5.1, APP6.5, APP7.2, APP8.2 and APP10.2 pumps are designed to supply low viscosity and corrosive fluids under high pressure,eg. in seawater reverse osmosis filtration applications and for high pressure salt water pumping.

The APP pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so thatlubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required.

All parts included in the APP pumps are designed to provide long service life, i.e. long service life with a constantly high efficiencyand minimum of service required.

The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and thepump displacement, regardless of any counter-pressure.

2. Benefits• One of the smallest and lightest pumps on the market.• Can be powered by a combustion engine provided that a special coupling is used.• Generates insignificant pulsations in the pressure line.• No preventive maintenance required (no periodic service like e.g. change of lubricant and wearing parts).• Long service life. Danfoss guarantees 8000 hours maintenance-free operation.• All parts of the pump are made of non-corrosive materials eg. duplex (SAF 2205/EN1.4462) and

superduplex (SAF 2507/EN1.4410) stainless steel and carbon reinforced PEEK.• High efficiency.

1: Shaft sealing 2: Mounting flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve plate 7: Swash plate 8: Cylinder barrel 9: Spring10: Port plate11: Connecting flange12: Housing with bearing

1 2 3 4 5

8 9 10

6

11127


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2 DKCFN.PD.010.FB1.02 521B0851

3. Technical data

Code number 180B3005 180B3006 180B3007 180B3008 180B3010

APP pumps APP5.1 APP6.5 APP7.2 APP8.2 APP10.2

Geometric displacement cm3 /rpm (in3 /rpm) 50 (3.05) 63 (3.84) 70 (4.27) 80 (4.88) 100 (6.10)

Flow (1800 rpm) m3 /h (gpm) 5.1 (22.5) 6.5 (28.6) 7.2 (31.7) 8.2 (36.1) 10.2 (44.9)

Min. pressure 1) bar (psi) 20 (290) 20 (290) 20 (290) 20 (290) 20 (290)

Max. pressure, cont. 2) bar (psi) 80 (1160) 80 (1160) 80 (1160) 80 (1160) 80 (1160)

Max. pressure, intermittent 3) bar (psi) 100 (1450) 100 (1450) 100 (1450) 100 (1450) 100 (1450)

Max. speed cont. 4) rpm 1800 1800 1800 1800 1800

Min. speed cont. rpm 700 700 700 700 700


80 bar and 1800 rpm:kW (hp) 13.7 (18.4) 17.3 (23.2) 19.2 (25.7) 21.7 (29.1) 27.4 (36.7)

Weight kg (lb) 30 (66) 30 (66) 30 (66) 30 (66) 30 (66)

1) For lower pressure, please contact Danfoss RO Solutions Sales Organization. 2) For higher pressure, please contact Danfoss RO Solutions Sales Organzation.3) Intermittent pressure is acceptable for less than 10 seconds per minute.4) For speeds above 1500 rpm the APP pump must be boosted at a pressure of 2-5 bar (29-72.5 psi).

4. Flow at different rpmUsing the diagram shown below, it is easy to select the APP pump which fits the application best if the flow required and therotation speed (rpm) of the pump are known.

0,00

2,00

4,00

6,00

8,00

10,00

12,00

600 800 1000 1200 1400 1600 1800 2000

rpm

m

3 / h

Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio isconstant, and the “desired “ flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpmcan be determined as: Desired flow × Rated rpm Required rpm =

Rated flow

5. Power requirements

Pump model Flow Pressure rpm Calc. factor

60 bar 70 bar 80 bar

l/min m3/h gpm 870 psi 1015 psi 1160 psi

APP5.1 66 4.0 17.4 8.3 kW 9.7 kW 11.1 kW 1460 475.2

APP5.1 79 4.7 20.9 10.0 kW 11.7 kW 14.3 kW 1752 475.2

APP6.5 83 5.0 22.0 10.5 kW 12.3 kW 14.0 kW 1460 475.2

APP6.5 100 6.0 26.4 12.6 kW 14.7 kW 16.8 kW 1752 475.2

APP7.2 93 5.6 24.6 11.6 kW 13.5 kW 15.5 kW 1470 480.6

APP7.2 112 6.7 29.5 13.9 kW 16.3 kW 18.6 kW 1764 480.6

APP8.2 106 6.4 28.1 12.7 kW 14.8 kW 16.9 kW 1470 502.2

APP8.2 128 7.7 33.7 15.3 kW 17.8 kW 20.3 kW 1764 502.2

APP10.2 133 8.0 35.1 16.0 kW 18.7 kW 21.4 kW 1470 496.2

APP10.2 159 9.6 42.1 19.3 kW 22.5 kW 25.7 kW 1764 496.2

The power requirements can be determined using one of the following guiding equations:

l/min × bar 16.7 × m3 /h × bar 0.26 × gpm × psiRequired power = [kW] or [kW] or [kW] Calc. factor Calc. factor Calc. factor

1 hp = 0.75 kW1 kW = 1.34 hp

1 gpm = 3.79 l/min1 l/min = 0.26 gpm1 m3 /h = 4.40 gpm1 gpm = 0.23 m3 /h

APP8.2

APP6.5

APP5.1

APP10.2

APP7.2


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521B0851 DKCFN.PD.010.FB1.02 3

6. Inlet pressureWater supply to the APP pump is either made from a tank placed above the pump or directly from a feed pump. The pressure at thepump inlet (I) must be in the range: 0.5 - 5 bar (7.3 - 72.5 psi).


• Fluid temperature: +3°C to +50°C (+37.4°F to 122°F) - dependent on the NaCl concentration• Ambient temperature: +3°C to +50°C (+37.4°F to 122°F)

The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration and

temperature.All critical parts of the APP pump are made of SAF 2507.If the APP pump is operated at high salinity, always flush the pump with fresh water at operation stop in order to minimise the riskof crevice corrosion.


7.2 Storage:

• Storage temperature: -40°C to +70°C (+37.4°F to 122°F) – provided that the APP pump is drained of fluid and stored”plugged”.


8. Noise level The chart indicates the noise level in dB(A) measured at a distance of 1 m from the APP pump in a reverberation room.

Type 60 bar (580 psi)1500 rpm

60 bar (580 psi)1800 rpm

80 bar (2000 psi)1500 rpm

80 bar (2000 psi)1800 rpm

APP5.1 74 79 73 78

APP6.5 74 79 73 78

APP7.2 74 79 73 78

APP8.2 74 79 73 78

APP10.2 74 79 73 78

Generally, noise will be reduced if speed is reduced and vice versa. Use flexible hoses in order to minimize vibrations and noise.

Since the APP pump is typically mounted on a bell housing or frame, the noise level can only be determined for the complete unit

(system).

It is therefore very important that the APP pump is mounted correctly on a frame with dampers to minimize vibrations and noise.

The noise level is influenced by:• The speed of the pump, high rpm create more noise than low rpm• Rigid mounting of the pump generates more noise than flexible mounting• Pipe mounting direct to the pump increases the noise level compared to a flexible hose

9. FiltrationAs water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakagerates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear ofthe pump.

The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridgesrated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typicallyhave only 90% filtration efficiency. This means that for each 100,000 particles reaching the filter, 10,000 particles pass through itcompared to only 20 particles in a filter with an efficiency of 99.98%.


904L / SAF 2205


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4 DKCFN.PD.010.FB1.02 521B0851

10. Dimensions10.1 APP pump

Description APP5.1 and APP10.2

C Bleeding M6, Hexagon AF = 5 mm

D Parallel key, DIN 6885, mm (in)12 × 8 × 70

(0.44 × 0.31 × 2.76)

I Inlet connection M42 x 1½ mm; 13 mm (0.51 in) deep

O Outlet connection M42 x 1½ mm; 13 mm (0.51 in) deep

Pump mounting flange 125 A2

10.2 Complete unit

Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) IEC Electric motor

APP5.1 350 415 160 254 210 505 11 kW, FPC 160 M-4

APP6.5 350 415 160 254 254 560 15 kW, FPC 160 L-4

APP7.2 350 415 160 254 254 560 15 kW, FPC 160 L-4

APP8.2 350 460 180 279 241 590 18.5 kW, FPC 180 M-4

APP10.2 350 460 180 279 279 630 22 kW, FPC 180 L-4

APP10.2 400 505 200 318 305 660 30 kW, FPC 200 L-4

For inlet and outlet connections data, see “Accessories catalogue” (521B0903).


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521B0851 DKCFN.PD.010.FB1.02 5


The figure below illustrates how to mount the APP pump and connect it to an electric motor/combustion engine.


If alternative mounting is required, please contact Danfoss Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly.

Note: Any axial and/or radial loads on the shaft must be avoided, see “User guide” (521B0888).

The APP pump should be connected to the rest of the plant with a flexible hoses.

11.2 Open-ended systems with water supply from tank

In order to eliminate the risk of cavitation, a positive inlet pressure should always be maintained by observing the followingguidelines:1. Place the tank (1) above the APP pump inlet (water level in tank should always be above the pump).2. Place a filter (2) in the water supply line in front of the tank.3. Dimension the inlet line (3) with minimum pressure drop (large internal diameter, minimum length of pipe, avoid bends and

fittings with small internal diameter).

11.3 Open-ended system with direct water supply

In order to eliminate the risk of cavitation, a positive inlet pressure is always to be maintained at min. 0.5 bar (7.3 psi) and max. 5 bar

(72.5 psi).1. Place the filter (1) in the water supply line in front of the APP pump.2. Place a monitoring pressure switch (2) set at min. 1 bar (14.5 psi) between filter and pump inlet. The monitoring switch must

stop the pump at pressures lower than 1 bar (14.5 psi) At speeds above 1500 rpm - use 2 bar (29 psi) as set point.

A CB

Min. 3 mm


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6 DKCFN.PD.010.FB1.02 521B0851

11.4 RO system with APP pump

1. For easy system bleeding and flushing, apply a bypass non-return valve (1) in parallel with the APP pump.2. Place an inlet filter (2) in front of the APP pump (3). Please consult section 9, “Filtration” for guidance on how to select the

right filter. Throughly clean pipes and flush system prior to start-up.3. Place a monitoring pressure switch (6) set at min. 1 bar between filter and pump inlet. The monitoring switch must stop the

pump at pressures lower than 1 bar (14.5 psi). Above 1500 rpm - use 2 bar (29 psi) as set point.4. Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/

connections, and fittings with small pressure losses).5. In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet (4) is always to be maintained at min.

0.5 bar (7.3 psi) and max. 5 bar (72.5 psi). At speeds above 1500 rpm the pressure at the inlet of the APP pump must be min.2 bar (29 psi).

6. Use flexible hoses (5) to minimize vibrations and noise.

7. Install a safety valve (7) in order to avoid system damage as the APP pump creates pressure and flow immediately after start-up, regardless of any counter-pressure.

M

Brine

Permeate APPFeed

12. ServiceProvided that the APP pump has been running according to the Danfoss specifications on pre-filtration, pressure, and rotationspeed, Danfoss guarantees minimum 8000 hours operation, however max. 18 months from date of sale.




The APP pump is made of duplex/super duplex materials with fine corrosion properties. However, it is always recommended toflush the APP pump when the system is shut down.

The shaft sealing in the APP pump is made of Hasteloy C. At high TDS and high water temperature, the service life of the shaftsealing will be reduced. For these applications it is recommended to replace the shaft sealing after approx. 4000 hours operation.


Water acts as lubricant in the APP pump. Thus there is no oil in the pump.


12.2 Repair

In case of irregular function of the APP pump, please contact the Danfoss RO Solutions Sales Organisation.

2

5

6

3

1

5 4

7


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521B0852 DKCFN.PD.010.FC1.02 09-2006

DATA SHEETWater Pumps

APP24 - 26


APP24 - APP26 pumps are designed to supply low viscosity and corrosive fluids under high pressure, eg. in seawater reverse osmosisfiltration applications and for high pressure salt water pumping.

The pumps are based on the axial piston principle enabling a very light and compact design, and they are designed so that thelubrication of the moving parts in the pumps is provided by the fluid itself. No oil lubrication is thus required.

All parts included in the pumps are designed to provide long service life, i.e. long service life with a constantly high efficiency andminimum service required.

The pumps are fixed displacement pumps in which the flow is proportional to the number of revolutions of the input shaft and thepump displacement.

2. Benefits

• One of the smallest and lightest pumps on the market.• Can be powered by a combustion engine provided that a special coupling is used.• Generates insignificant pulsations in the pressure line.• No preventive maintenance required (no periodic service like e.g. change of lubricant and wearing parts).• Long service life (Danfoss guarantees 8000 hours maintenance-free operation)• All parts of the pump are made of non corrosive materials eg. Duplex (SAF 2205/EN1.4462) and

Super-duplex (SAF 2507/EN1.4410) stainless steel and carbon reinforced PEEK • High efficiency

3. Technical data

Frequency 50 Hz 60 Hz

APP pumps APP24-50 APP26-50 APP24-60 APP26-60Rated speed rpm 1200 1200 1200 1200

Maximum speed rpm 1200 1200 1200 1200

Minimum speed rpm 700 700 700 700

Geometric displacement cm3 /rpm

in3 /rpm

352 380 352 380

21.5 23.2 21.5 23.2

Flow (1200 rpm) m3 /h

gpm

24 26 24 26

105.7 114.5 105.6 114.5

Max. pressure bar

psi

80 80 80 80

1160 1160 1160 1160

Min. pressure bar

psi

40 40 40 40

580 580 580 580


max. speed and 80 bar (1160 psi):

kW

hp

64 69 64 69

86 92 86 92Weight kg

lb

125 125 125 125

275.6 275.6 275.6 275.6

1: Shaft sealing 2: Mounting flange 3: Bleeding plugs 4: Retaining ring 5: Piston/shoe 6: Valve/thrust plate 7: Swash plate 8: Cylinder barrel 9: Spring10: Port plate11: Connecting flange12: Housing with bearing


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2 DKCFN.PI.010.FC1.02 521B0852

4. Flow at different rpmWhen using the diagram shown below, it is easy to select the pump which fits the application best if the flow required and therotation speed (rpm) of the pump are known.

0

5

10

15

20

25

30

900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900

rp m

m 3 / h

APP26-50Hz

APP24-50Hz

APP26-60Hz

APP24-60Hz

Furthermore, this diagram shows that the flow can be changed by changing the rotation speed of the pump. The flow/rpm ratio isconstant, and the “desired “ flow can be obtained by changing the rotation speed to a corresponding value. Thus, the required rpmcan be determined as:

Desired flow × Rated rpmRequired rpm =

Rated flow

5. Dimensions

Description APP24 - APP26

E Parallel key, DIN 6885, mm (in)12 × 8 × 70

(0.47 × 0.31 × 2.76)

F Bleeding G ¼”, Hexagon AF = 8 mm

I Inlet connection 3” hose pipe

O Outlet connection 2½ Victaulic

Pump mounting flange 180 B 4

6. Inlet pressure

Water supply to the pump is either made from a tank placed above the pump or directly from the mains. The pressure at the pumpinlet (I) must be in the range: 2 - 5 bar (29 - 72.5 psi)


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521B0852 DKCFN.PI.010.FC1.02 3


• Fluid temperature: +3°C to +50°C (dependent on the NaCl concentration)• Ambient temperature: +3°C to +50°C

The chart below illustrates the corrosive resistance of different types of stainless steel related to NaCl concentration andtemperature.All critical parts of the APP water pump is made of SAF 2507.If the water pump is operated at high salinity, always flush the the water pump with fresh water at operation stop in order tominimise the risk of crevice corrosion.


7.2 Storage:

• Storage temperature: -40°C to +70°C – provided that the pump is drained of fluid and stored ”plugged”.


8. Filtration

As water has very low viscosity, the APP pumps have been designed with very narrow clearance in order to control internal leakagerates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear ofthe pump.

The main filter must have a filtration efficiency of 99.98% at 10 µm. We recommend that you use precision depth filter cartridgesrated 10µm abs. ß10>5000 (equivalent to a filtration efficiency of 99.98%). Bag filters and string wound filter cartridges typicallyhave only 33% filtration efficiency.



The figure below illustrates how to mount the pump and connect it to the electric motor/combustion engine.


If alternative mounting is required, please contact Danfoss RO Sales Organization for further information. To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly.

Note: Any axial and radial loads on the shaft must be avoided.

A CB


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4 DKCFN.PI.010.FC1.02 521B0852

Pump A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) IEC Electric motor

APP24 550 620 250 406 349 770 55 kW, FPC 250 M-4

APP26 550 920 280 457 368 845 75 kW, FPC 280 S-4

10. Dimensions, complete unit

11. Service

Provided that the pump has been running according to the Danfoss specifications on pre-filtration, pressure, and rotation speed,Danfoss guarantees minimum 8000 hours operation, however max. 18 months from date of sale.




The APP pump is made of duplex/super duplex materials with fine corrosion properties. However, it is always recommended toflush the pump when the system is shut down.

The shaft sealing in the APP pump is made of Hasteloy C. At high TDS and high water temperature, the service life of the shaftsealing will be reduced. For these applications it is recommended to replace the shaft sealing after approx. 4000 hours operation.


Water acts as lubricant in the APP. Thus there is no oil in the the pump.


11.2 RepairIn case of irregular function of the APP, please contact the Danfoss RO Solutions Sales Organisation.

E D


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The Danfoss APP pumps

The Danfoss Axial Piston Pump (APP) is a positivedisplacement pump with an almost constant flow (+/- 1%)to speed ratio.The design originating from oil hydraulics andsubsequently redesigned by Danfoss, during the last 15years, to pump tap and seawater. Tens of thousands ofpumps are in operation worldwide proving the pumps tobe among the most cost-effective and reliable pumps formembrane applications, both as main high-pressurepumps but also for recovering energy as reversingpumps (motors) in the reject line.

The pumps are made in materials incorporating Duplex

and Super-duplex materials as standard.

With Danfoss APP pumps you get the following benefits:

• Low energy consumption Total efficiencies up to 95 percent – among the most efficient in the market.

• Long service lifeDanfoss guarantees service free operation for more than 8,000 hours thanks to two design features:• No oil lubrication: the medium itself lubricates the pump -no risk for contamination of the permeate.• No need for service on a regular basis: the mechanical shaft is the only seal in the pump.

• Easy service• Its easy and quick to assemble and dissemble the pump - less

1 / 2 then hour.

• Corrosion resistance All wetted parts of the pump are designed in duplex, super duplex stainless steel and polymer, ensuringresistance to corrosive and low viscosity fluids, e.g. seawater and brackish water.

• High-pressure operation Continuous operation at a discharge pressure between 10 and 80 bar (145-1160 psi). Higher dischargepressures are available on request.

• Wide flow range One pump size covers the same flow range as several centrifugal pumps, because the flow is a linearfunction of the speed (rpm). The pumps run at speeds between 700 and 3,450 rpm with the sameefficiency.

• Low pulsationA design featuring up to nine pistons reduces pressure pulsations in the discharge line down to 1.5percent, rendering pulsation dampers superfluous addition, and reducing installing cost.

• Compact design The most compact pump on the market. G iving system builders a free hand to design more compactsystems. The pump may also be directly mounted onto an electrical motor via a bell housing with aflexible coupling. No need for frames, belt drive or gearbox.


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Since one of our goals is to facilitate supply chain optimization for our customers we offer:

• High-Pressure Pumps

• Electrical Motors• Frequency Inverters

• Soft Starters

• Valves

• Pressure Transmitters• ….and all kinds of "around-the-pump" accessories

I would especially like to introduce our new line of checkvalves, standpipes and high pressure hoses with victaulicconnections in duplex.

Danfoss A/S RO-Solution can supply all APP pumps with ATEX approval mounted with EX-proof Zone II motorsvia stainless steel housing.

Cost-effective operation and service due to light weight

and compact design:

• Flexibility in design of desalination units.

• Mounted on motor frame – only one frameneeded e.g. no alignment.

• No belt-drive or gearbox• Replacement without lifting gear

• Easy and quick replacement.

Emergency stock for all pumps for overnight shipment for urgent service situations…..setting new standards

For Further information please visit our website : www.danfoss.com/nessie/rosolution

Or contact us at Danfoss RO-Solutions:

Torben Østerby Anders Grum KjærgaardSales Manager, Asia Sales ManagerDirect tel.: +45 7488 5272 Direct tel.: +45 7488 7320Cell Phone.: +45 2343 5272 Cell Phone.: +45 5133 7320

E-mail: [email protected] E-mail: [email protected] Fax.: +45 7445 3831 Fax.: +45 7445 3831

Documents

Danfoss_DataSheet