Danfoss PVG 16 Technical Information

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Danfoss PVG 16 Technical Information Manual pdf 37 page image

PVPC with Check ValveThe PVPC external pilot pressure adapter with check valve is an accessory in the M-port available for PVPinlet modules with integrated pilot pressure reduction valve (PPRV).The PVPC with check valve enables an external pilot pressure supply through the PVPC adapter and thePPRV, while also allowing the main pump to supply the PPRV through the P-gallery as a standard OpenCenter PVP with PPRV.PVPC with Check ValvePVP with PVPC with check valve schematicLSTPMPpOne application example for the PVPC with check valve is where it is a wanted feature to operate thevalve group by means of the PVE electrical actuators without pump flow.When the external solenoid valve is opened, oil from the pressure side of the cylinder is fed via the PVPCthrough the PPRV to act as the pilot supply for the PVE electrical actuators. This means that it is possibleto lower a load by means of the PVE electrical actuators without starting the pump.The built-in check valve prevents the oil from flowing via the pressure adjustment spool to tank. With thepump functioning normally the external solenoid valve is closed to ensure that the load is not lowereddue to the pilot supply oil flow requirement of approximately 1 l/min [0.25 US gal/min].With a Closed Center PVP the external pilot oil supply can be connected to the pressure gaugeconnection without the use of a PVPC plug.Part numbers for Open Center/Closed Center PVPMPart number 157B5600 157B5700Thread G1/2” 1/2-20 UNFTechnical InformationPVG 16 Proportional Valve GroupPVP Inlet Module Accessories© Danfoss | December 2018 BC00000211en-000901 | 37