Loop Flushing Relief Valve; Displacement Limiter - Danfoss H1 Series Technical Information

Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Operation

Loop flushing relief valve

Displacement limiter

© Danfoss | December 2016
The loop flushing relief valve is incorporated into all H1 motors. Use the loop flushing option in
installations that require fluid to be removed from the low pressure side of the system circuit due to
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
P003 491
B
All Series H1 motors incorporate mechanical displacement limiters.
The minimum displacement of the motor is preset at the factory with a set screw in the motor housing.
A tamper-proof cap is provided.
L2
Loop flushing relief valve size
5
40 bar
30 bar
20 bar
10 bar
P003 487
0 10
Legend:
X
Loop flushing flow (l/min)
Y Low system pressure minus case pressure (bar)
10 15 20 30
20 30 40
X
11037153 | BC00000043en-US1103 | 21
40
50
50 60
P006 034