Parker Series R4R / R4R*P2 Pilot Operated Pressure Reducing Valve, Subplate Mounting

Parker subplate mounted pilot operated pressure reducing valves series R4R ensure a constant pressure in the secondary part of the hydraulic system. Series R4R*P2 enables a continuous adjustment by the proportional solenoid operated pilot stage.

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As versatile pilot operated pressure reducing valves for subplate mounting, Parker’s series R4R with manual adjustment and series R4R*P2 with proportional solenoid adjustment provide high flow and ensure a constant pressure in the secondary part of the hydraulic system. Independent of the primary pressure, the secondary pressure is reduced to the pressure setting. In order to avoid unintended motion of the actuator, the valves are normally closed.

Series R4R*P2 has additionally a proportional solenoid operated pilot stage and a cartridge main stage. The optimum performance can be achieved in combination with the digital amplifier module PCD00A-400.

Markets:

• Industrial

Benefits:

• Wide range of options – suitable for almost every application
• Flexible, versatile mounting in any orientation – makes integration easy
• Normally closed position – avoids unintended actuator motion
• High flow up to 500 l/min in NG32 – optimum efficiency in relation to valve size
• Short delivery time – no warehousing necessary
• Subplate mounting according to ISO 5781
• 3 pressure stages: 105, 210, 350 bar
• R4R*P2: optimally suited to the digital amplifier module PCD00A-400

Applications:

• Suitable for general hydraulic applications

Technical Specifications

Mounting Type	Subplate mounting
Operation Type	Pilot
Actuation Type	Manually, Solenoid
Weight	Depending on size, 2.7 – 13.5 kg
Product Series	Pressure valve
Maximum Flow Rate	N/A
Maximum Operating Pressure	Ports A, B and X 350, port Y depressurized bar
Maximum Operating Temperature	60 °C
Minimum Operating Temperature	-20 °C
Seal Material	NBR, FPM
Flow Rate	Depending on size, 150 – 500 L/min
Maximum Pressure Setting	105, 210, 350 bar
Body Material	Cast iron