High Pressure Relief and Charge Check Valve with Bypass Valve in relief mode (060/068)
P003 268
High pressure relief and charge check valve in charging mode
P109187
1
2
1. High pressure side of working loop
2. Charge check and high pressure relief valve
High pressure relief and charge check valve in relief mode
P109188
1
2
1. High pressure side of working loop
2. Charge check and high pressure relief valve
Charge Pressure Relief Valve
The charge pressure relief valve maintains charge pressure at a designated level above case pressure. The
charge pressure relief valve is a direct acting poppet valve that opens and discharges fluid to the pump
case when pressure exceeds a designated level. This level is set with the pump running at 1800
min
-1
(rpm). For external charge flow, the CPRV is set with 30 l/min [8 US gal/min]. In forward or reverse,
charge pressure will be slightly lower than in neutral position. The model code of the pump specifies the
charge pressure relief valve setting.
Typical charge pressure increase from 1.2-1.5 bar per 10 l/min [17.4-21.8 psi per 2.64 US gal/min].
Service Manual
H1 45/53/60/68 Tandem Closed Circuit Axial Piston Pumps
Operation
12 |
©
Danfoss | June 2018
520L0928 | AX00000103en-US0303
