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Service Manual
H1F Bent Axis Fixed Displacement Motors, Size 080
Operation
H1F loop flushing relief valve
©
Danfoss | December 2023
The loop flushing relief valve is incorporated into all H1 motors used in closed circuit applications to
remove fluid from the low pressure side of the system circuit to meet cooling requirements.
The loop flushing relief valve is also used to facilitate the removal of contaminants from the loop.
The loop flushing valve is equipped with an orificed charge pressure relief valve designed with a cracking
pressure of 16 bar [232 psi].
Valves are available with several orifice sizes to meet the flushing flow requirements of all system
operating conditions.
A loop flushing defeat option is available.
Loop flushing relief valve (cross section)
P003 491
Loop flushing relief valve sizes
5
10
15
40 bar
30 bar
20 bar
10 bar
0
10
20
X
X
Loop flushing flow (l/min)
Y
Low system pressure minus case pressure (bar)
Loop flushing relief valve schematic
A
B
P003 487
20
30
40
50
30
40
50
60
P006 034
L2
AX465363259664en-000102 | 15
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