Paht 256-308 - Danfoss PAHT Operation, Installation, And Maintenance Manual

Operation guide
4.4

PAHT 256-308

Pump size
Code number PAHT
Housing material
Geometric displacement
Pressure
Min. outlet pressure
Max. outlet pressure
Inlet pressure, continuous
Max inlet pressure, peak
1)
Speed
Min. speed
Min. speed, continuous
Max. speed
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. pressure
1200 rpm at max. pressure
Torque at max. outlet pressure
Media temperature
Ambient temperature
2)
Sound pressure level
Weight
1% per minute peak, 10% per minute during start up.
1)
Measurements according to EN ISO 3744: 2010 / dB(A) [L
2)
Measured at max pressure and rpm for a motor pump unit.
© Danfoss | 2023.12
Installation, Operation and Maintenance Manual for PAHT 20-90 pumps
cm³/rev
in³/rev
barg
psig
barg
psig
barg
psig
barg
psig
rpm
rpm
rpm
l/min
l/min
gpm
gpm
kW
50 Hz
hp
60 Hz
Nm
lbf-ft
°C
°F
°C
°F
dB(A)
kg
lbs
] values are calculated.
PA, 1m
256
180B1001
AISI 316 or higher
256
15.6
30
435
120
1740
2-6
29-87
10
145
450
700
1250
89.6
294.4
23.3
76.5
75
100
549.6
405.6
2-50
37-122
0-50
32-122
82
105
231
308
180B1002
AISI 316 or higher
308
18.8
30
435
120
1740
2-6
29-87
10
145
450
700
1250
107.8
354.2
28.0
92.1
75
125
661.3
448.0
2-50
37-122
0-50
32-122
87
105
231
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