180R9288_AQ109686503100en-001301 | 25© Danfoss | 2023.12
Operation guide Installation, Operation and Maintenance Manual for PAHT 20-90 pumps
Pump size 256 308
Code number PAHT 180B1001 180B1002
Housing material AISI 316 or higher AISI 316 or higher
Geometric displacement cm³/rev 256 308
in³/rev 15.6 18.8
Pressure
Min. outlet pressure barg 30 30
psig 435 435
Max. outlet pressure barg 120 120
psig 1740 1740
Inlet pressure, continuous barg 2-6 2-6
psig 29-87 29-87
Max inlet pressure, peak
1)
barg 10 10
psig 145 145
Speed
Min. speed rpm 450 450
Min. speed, continuous rpm 700 700
Max. speed rpm 1250 1250
Typical ow - Flow curves available in section 5
450 rpm at max. pressure l/min 89.6 107. 8
1250 rpm at max. pressure l/min 294.4 354.2
450 rpm at max. pressure gpm 23.3 28.0
1250 rpm at max. pressure gpm 76.5 92.1
Typical motor size
1000 rpm at max. pressure kW
50 Hz
75 75
1200 rpm at max. pressure hp
60 Hz
100 125
Torque at max. outlet pressure Nm 549.6 661.3
lbf-ft 405.6 448.0
Media temperature °C 2-50 2-50
°F 37-122 37-122
Ambient temperature °C 0-50 0-50
°F 32-122 32-122
Sound pressure level
2)
dB(A) 82 87
Weight kg 105 105
lbs 231 231
4.4 PAHT 256-308
1)
1% per minute peak, 10% per minute during start up.
2)
Measurements according to EN ISO 3744: 2010 / dB(A) [L
PA, 1m
] values are calculated.
Measured at max pressure and rpm for a motor pump unit.
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