180R9289 | AQ109686503106en-001102 | 25
© Danfoss | 2023.01
Operation guide
Installation, Operation and Maintenance Manual for PAHT 256-308 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 flow - 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
55
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.
Data sheet
