180R9288_AQ109686503100en-001301 | 23
© Danfoss | 2023.12
Operation guide
Installation, Operation and Maintenance Manual for PAHT 20-90 pumps
Pump size
20
20 LP
25
25 LP
32
32 LP
Code number PAHT
180B0019
180B0070
180B0020
180B0071
180B0021
180B0072
Housing material
AISI 316 or
higher
AISI 316 or
higher
AISI 316 or
higher
AISI 316 or
higher
AISI 316 or
higher
AISI 316 or
higher
Geometric
displacement
cm³/rev
20
20
25
25
32
32
in³/rev
1.22
1.22
1.53
1.53
1.95
1.95
Pressure
Min. outlet
pressure
barg
30
10
30
10
30
10
psig
435
145
435
145
435
145
Max. outlet
pressure
barg
100
50
160
50
160
50
psig
1450
725
2321
725
2321
725
Inlet pressure,
continuous
1)
barg
0-6
2-6
0-6
2-6
0-6
2-6
psig
0-87
29-87
0-87
29-87
0-87
29-87
Max. inlet
pressure, peak
2)
barg
20
20
20
20
20
20
psig
290
290
290
290
290
290
Speed
Min. speed
rpm
700
700
700
700
700
700
Min. speed,
continuous
rpm
1000
1000
1000
1000
1000
1000
Max. speed
rpm
2400
2400
2400
2400
2400
2400
Typical flow - Flow curves available in section 5
1000 rpm at max
pressure
l/min
16.9
17.9
20.6
23
28.0
31.5
1500 rpm at max
pressure
l/min
27.0
27.5
33.2
35.3
44.2
47.4
1200 rpm at max.
pressure
gpm
5.4
5.7
6.7
7.4
9.0
10.0
1800 rpm at max.
pressure
gpm
8.6
8.8
10.6
11.3
14.0
15.1
Typical motor size
1500 rpm at max.
pressure
kW
50Hz
5.5
4
11.0
5.5
15.0
15.5
1800 rpm at max.
pressure
hp
60Hz
10
7.5
20.0
7.5
25
10
Torque at max.
outlet pressure
Nm
35
19.5
69.2
25
89.0
29
lbf-ft
25.8
14.4
51.1
18.5
65.7
21.4
Media tempera-
ture
°C
2-50
2-50
2-50
2-50
2-50
2-50
°F
37-122
37-122
37-122
37-122
37-122
37-122
Ambient
temperature
°C
0-50
0-50
0-50
0-50
0-50
0-50
°F
32-122
32-122
32-122
32-122
32-122
32-122
Sound pressure
level
3)
dB(A)
79
79
79
79
79
79
Weight
kg
19
19
19
19
19
19
lbs
42
42
42
42
42
42
4.2
PAHT 20-32 and PAHT 20-32 LP
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
PA, 1m
] values are calculated.
Measured at max pressure and rpm for a motor pump unit.
