Danfoss PAHT 2-6.3, PAHT 10-12.5, PAHT 20-32, PAHT 50-90, PAHT 256-308 Data sheet

Data sheet

Data sheet

PAHT pumps

PAHT 2-308 pumps /

PAHT 2-6.3/PAHT/10-12.5/PAHT 20-25/

PAHT G 2-308 pumps /

PAHT 50-90 and PAHT 256-308

ATEX PAHT G pump

danfoss.high-pressurepumps.com

hpp.danfoss.com

Data sheet PAHT 2-308 pumps

Table of Contents

1. Introduction ............................................................................2

2. Benets.................................................................................3

3. Application examples ...................................................................3

4. Technical data ..........................................................................4

4.1 PAHT 2-12.5 .............................................................................4

4.2 PAHT 20-32 .............................................................................5

4.3 PAHT 50-90 .............................................................................6

4.4 PAHT 256-308...........................................................................7

5. Flow ....................................................................................8

5.1 PAHT 2-6.3 typical ow curves at max pressure ..........................................8

5.2 PAHT 10-12.5 typical ow curves at max pressure ........................................9

5.3 PAHT 20-32 typical ow curves at max pressure.........................................10

5.4 PAHT 50-90 typical ow curves at max pressure.........................................11

5.5 PAHT 256-308 typical ow curves at max pressure ......................................12

6. Motor requirements....................................................................13

7. Installation.............................................................................14

7.1 Filtration ..............................................................................14

7.2 Noise ..................................................................................14

7.3 Open-system design ...................................................................15

7.4 Closed-system design .................................................................16

8. Dimensions and connections...........................................................17

8.1 PAHT 2-6.3 .............................................................................17

8.2 PAHT 10-12.5...........................................................................18

8.3 PAHT 20-32 ............................................................................19

8.4 PAHT 50-90 ............................................................................20

8.5 PAHT 256-308..........................................................................21

1. Introduction

9. Service.................................................................................22

The Danfoss range of PAHT high-pressure pumps
is specically designed for use with technical
water such as:

• Ultra-pure water that has undergone
multiple reverse osmosis processes

• De-ionized water

• Demineralized water

Danfoss PAHT pumps are positive displacement
pumps, with axial pistons that move a xed
amount of water in each cycle. Flow is propor­tional to the number of input shaft revolutions
(rpm). Unlike centrifugal pumps, they produce
the same ow at a given speed independently of
no matter what the discharge pressure.

2

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Data sheet PAHT 2-308 pumps

Below sectional drawing is an example of a PAHT pump.

1: Mounting ange
2: Shaft seal
3: Connecting ange
4: Port plate
5: Valve plate
6: Retainer plate
7: Swash plate
8: End cap

9: Spring
10: Pis ton
11: Cylinder barrel
12: Housing with bearing

2. Benets • Zero risk of lubricant contamination:

- Oil lubricants are replaced with the
pumped medium, water, so there is no
contamination risk from the pump.

• Low maintenance costs:

- Ecient design and all-stainless steel
construction ensure exceptionally long
lifetime. When Danfoss specications
are met, service intervals of up to 8,000
hours can be expected. Service is easy,
and can be carried out on site due to
the simple design and few parts.

• Low energy costs:

- The highly ecient axial piston design
provides the lowest energy consump­tion of any comparable pump on the
market.

• Easy installation:

- The lightest and most compact design
available.

3. Application examples • High-pressure cleaning with ultra-pure
water, as used in the manufacturing of
at-panel displays and many other
electronic products.

• High-pressure cleaning with ultra-pure
water, as used in the manufacturing of
parts for the automobile industry.

• Adiabatic cooling systems to replace or
supplement standard A/C systems in server
rooms and factories.

- Pump can be installed horizontally or
vertically.

- No pulsation dampeners necessary due
to extremely low-pressure pulsation.

- Powered by electric motors or combus­tion engines.

- Suitable for both boosted inlet
pressure and water supply from a tank.

- No need for cooling circuits due to very
high mechanical eciency.

• Certied quality:

- Fullls the stringent hygiene require­ments, VDI 6022, HACCP.

- Certicates:
ISO 9001, ISO 14001

API available on request

• Humidication in oce buildings, elec-

tronic component manufacturing, dairies,
greenhouses, etc.

• Dust suppression and odor control

systems, for example in paper, textile and
wood production.

• Reduction of NOx emissions in diesel

engines and gas turbines.

• Gas turbine by inlet fogging and fuel wash

systems.

AI106586503085en-000901| 05.2021

3

Data sheet PAHT 2-308 pumps

4. Technical data 4.1 PAHT 2-12.5

Pump size 2 3.2 4 6.3 10 12 .5

Code number PAHT 180B0 031 180B0077 180B0030 180B0029 180B0032 180B0033

Housing material AISI 304 AISI 304 AISI 304 AISI 304 AISI 304 AISI 304

Geometric
displacement

Pressure

Min. outlet
pressure

Max. outlet
pressure

Inlet pressure,
continuous

Max. inlet
pressure, peak

Speed

Min. speed rpm 1000 1000 1000 1000 1000 1000

Min. speed,
continuous

Max. speed rpm 3000 3000 3000 3000 2400 2400

Typical ow - Flow curves available in section 5

1000 rpm at
max. pressure

1500 rpm at
max. pressure

1200 rpm at
max. pressure

1800 rpm at
max. pressure

Typical motor size

1500 rpm at
max. pressurekW50 Hz

1800 rpm at
max. pressurehp60 Hz

Torque at max.
outlet pressure

Media
temperature

Ambient
temperature

Sound
pressure level

Weight kg 4.4 4.4 4.4 4.4 7.7 7.7

cm³/rev 2 3.2 4 6.3 10 12. 5

in³/rev 0.12 0.20 0.24 0.38 0.61 0.76

barg 30 30 30 30 30 30

psig 435 435 435 435 435 435

barg 100 100 100 100 14 0 140

psig 1450 1450 1450 1450 2031 2031

barg 0-4 0-4 0-4 0-4 0-4 0-4

psig 0-58 0-58 0-58 0-58 0-58 0-58

1)

barg 4 4 4 4 4 4

psig 58 58 58 58 58 58

rpm 1000 1000 1000 1000 1000 1000

l/min 0.7 2.0 3.0 5.5 7. 6 10.2

l/min 1.7 3.6 5.0 8.6 12.6 16.5

gpm 0.3 0.7 1.0 1.8 2.5 3.3

gpm 0.6 1.2 1.6 2.7 4.0 5.3

Nm 4.4 6.7 8.1 12. 4 25.6 31.7

lbf-ft 3.2 4.9 6.0 9. 2 18.9 23.4

°C 2-50 2-50 2-50 2-50 2-50 2-50

°F 37-122 37-12 2 37-122 37-122 37-122 37-12 2

°C 0-50 0-50 0-50 0-50 0-50 0-50

°F 32-122 32-12 2 32-122 32-12 2 32-122 32-122

dB(A) 76 76 76 76 75 75

2)

lbs 9.7 9.7 9.7 9.7 17.0 17. 0

0.75 1.1 1.5 2.2 4.0 5.5

1.0 1.5 2.0 3.0 7.5 7. 5

1)

1% per minute peak, 10% per minute during start up.

2)

Measurements according to EN ISO 3744: 2010 / dB(A) [L

Measured at max pressure and rpm for a motor pump unit.

4

AI106586503085en-000901 | 05.2021

] values are calculated.

PA, 1m

Data sheet PAHT 2-308 pumps

4.2 PAHT 20-32

Pump size 20 25 32

Code number PAHT 180 B0019 180 B0020 180B0021

Housing material AISI 316

Geometric
displacement

Pressure

Min. outlet
pressure

Max. outlet
pressure

Inlet pressure,
continuous

Max. inlet
pressure, peak

Speed

Min. speed rpm 700 700 700

Min. speed,
continuous

Max. speed rpm 2400 2400 2400

Typical ow - Flow curves available in section 5

1000 rpm at
max pressure

1500 rpm at
max pressure

1200 rpm at
max. pressure

1800 rpm at
max. pressure

Typical motor size

1500 rpm at
max. pressurekW50Hz

1800 rpm at
max. pressurehp60Hz

Torque at max.
outlet pressure

Media
temperature

Ambient
temperature

Sound
pressure level

Weight kg 19 19 19

cm³/rev 20 25 32

in³/rev 1.22 1.53 1.95

barg 30 30 30

psig 435 435 435

barg 100 160 160

psig 1450 2321 2321

barg 0-6 0-6 0-6

1)

psig 0-87 0-87 0-87

barg 20 20 20

2)

psig 290 290 290

rpm 1000 1000 1000

l/min 16.9 20.6 28.0

l/min 27. 0 33.2 44.2

gpm 5.4 6.7 9.0

gpm 8.6 10.6 14.0

Nm 21.0 69.2 89.0

lbf-ft 15.5 51.1 65.7

°C 2-50 2-50 2-50

°F 37-122 37-12 2 37-122

°C 0-50 0-50 0-50

°F 32-122 32-122 32-12 2

dB(A)

3)

lbs 42 42 42

or higher

or higher

5.5 11.0 15.0

7.5 20.0 20.0

79 79 79

AISI 316

AISI 316

or higher

1)

Above 1800 rpm inlet pressure 2-6 barg

2)

1% per minute peak, 10% per minute during start up.

3)

Measurements according to EN ISO 3744: 2010 / dB(A) [L

Measured at max pressure and rpm for a motor pump unit.

AI106586503085en-000901| 05.2021

] values are calculated.

PA, 1m

5

Data sheet PAHT 2-308 pumps

4.3 PAHT 50-90

Pump size 50 63 70 80 90

Code number PAHT 180B0085 180B0086 180B0087 180B0088 180B0089

Housing material AISI 316

Geometric
displacement

Pressure

Min. outlet
pressure

Max. outlet
pressure

Inlet pressure,
continuous

Max. inlet
pressure, peak

Speed

Min. speed rpm 700 700 700 700 700

Min. speed,
continuous

Max. speed rpm 1800 1800 180 0 1800 1800

Typical ow - Flow curves available in section 5

1000 rpm at
max. pressure

1500 rpm at
max. pressure

1200 rpm at
max. pressure

1800 rpm at
max. pressure

Typical motor size

1500 rpm at
max. pressurekW50 Hz

1800 rpm at
max. pressurehp60 Hz

Torque at max.
outlet pressure

Media
temperature

Ambient
temperature

Sound
pressure level

Weight kg 34 34 34 34 34

cm³/rev 50 63 70 80 90

in³/rev 3.05 3.84 4.27 4.88 5.49

barg 30 30 30 30 30

psig 435 435 435 435 435

barg 80 160 160 160 160

psig 1160 2321 2321 2321 2321

barg 0-6 0-6 0-6 0-6 0-6

psig 0-87 0-87 0-87 0-87 0-87

1)

barg 20 20 20 20 20

psig 290 290 290 290 290

rpm

l/min 43.7 50.5 5 7.7 68.3 77. 6

l/min 68.7 82.1 92.9 108.5 122.6

gpm 14.0 16. 4 18.7 21.9 24.9

gpm 21.8 26.3 29.6 34.5 38.9

Nm 68.5 172.6 191.8 219.8 246.6

lbf-ft 50.6 127. 4 141.5 162.2 182.0

°C 2-50 2-50 2-50 2-50 2-50

°F 37-122 37-12 2 37-122 37-122 37-122

°C 0-50 0-50 0-50 0-50 0-50

°F 32-122 32-122 32-12 2 32-122 32-122

dB(A) 80 80 80 80 81

2)

lbs 75 75 75 75 75

or higher

AISI 316

or higher

AISI 316

or higher

AISI 316

or higher

1000 1000 1000 1000 1000

11 30 30 37 45

20 50 50 60 75

AISI 316

or higher

1)

1% per minute peak, 10% per minute during start up.

2)

Measurements according to EN ISO 3744: 2010 / dB(A) [L

Measured at max pressure and rpm for a motor pump unit.

] values are calculated.

PA, 1m

6

AI106586503085en-000901 | 05.2021

Data sheet PAHT 2-308 pumps

4.4 PAHT 256-308

Pump size 256 308

Code number PAHT 180B1001 180B10 02

Housing material AISI 316

Geometric
displacement

Pressure

Min. outlet
pressure

Max. outlet
pressure

Inlet pressure,
continuous

Max inlet
pressure, peak

Speed

Min. speed rpm 450 450

Min. speed,
continuous

Max. speed rpm 1250 1250

Typical ow - Flow curves available in section 5

450 rpm at
max. pressure

1250 rpm at
max. pressure

450 rpm at
max. pressure

1250 rpm at
max. pressure

Typical motor size

1000 rpm at
max. pressurekW50 Hz

1200 rpm at
max. pressurehp60 Hz

Torque at max.
outlet pressure

Media
temperature

Ambient
temperature

Sound
pressure level

Weight kg 105 105

cm³/rev 256 308

in³/rev 15.6 18. 8

barg 30 30

psig 435 435

barg 120 120

psig 174 0 1740

barg 2-6 2-6

psig 29-87 29-87

barg 10 10

1)

psig 145 145

rpm 700 700

l/min 89.6 107. 8

l/min 294.4 354.2

gpm 23.3 28.0

gpm 76. 5 92.1

Nm 549.6 6 61.3

lbf-ft 405.6 448.0

°C 2-50 2-50

°F 37-122 37-12 2

°C 0-50 0-50

°F 32-122 32-122

dB(A) 82 87

2)

lbs 231 231

or higher

55 75

100 125

AISI 316

or higher

1)

1% per minute peak, 10% per minute during start up.

2)

Measurements according to EN ISO 3744: 2010 / dB(A) [L

Measured at max pressure and rpm for a motor pump unit.

AI106586503085en-000901| 05.2021

] values are calculated.

PA, 1m

7

Data sheet PAHT 2-308 pumps

20

18

16

14

12

10

8

6

4

2

0 rpm

PAHT 2.0

PAHT 3.2

PAHT 4.0

PAHT 6.3

l/min

1000

1250

1500

1750

2000

2500

2250

2750

3000

5. Flow The ow (Q
calculated with the following equation:

Q

= Q

e

) at various pressure (p

e

– [(Q

(th)

– Q (p

(th)

)) x (p / p

max

) can be

max

)]

max

The theoretical ow can be calculated with the
following equation:

V x n
Q

=

(th)

1000

5.1 PAHT 2-6.3 typical ow curves at max pressure

l/min

20

18

16

14

12

10

8

6

4

2

0 rpm

1000

1250

1500

1750

At zero pressure the true ow equals the
theoretical ow Q

: Theoretical ow (l/min / gpm)

Q

(th)

Q (p

): Flows at max. pressure (l/min and

max

p
p: Pressure (barg / psig)

gpm), see 4.1-4.4

: Max pressure (barg / psig)

max

V: Displacement (cm

.

(th)

3

/ rev.)

n: Motor speed (rpm)

2000

2250

2500

2750

PAHT 6.3

PAHT 4.0

PAHT 3.2

PAHT 2.0

3000

gpm

5.0
PAHT 6.3

4.5

4.0

3.5

3.0
PAHT 4.0

2.5

2.0

PAHT 3.2

1.5
PAHT 2.0

1.0

0.5

0

1000

8

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1250

1500

1750

2000

2250

2500

2750

rpm

3000