Pilot Operated Pressure Unloading Valve, SAE Flange - Series R5U

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Pilot operated pressure unloading valves series R5U are exceptional – both in function and design – even under high flow conditions. They are part of the Parker valve range with SAE flanges which is unique in its variety. Series R5U has a similar design to the subplate mounted R4U series.

R5U valves are used to unload a circuit at low pressure. The SAE flange allows to mount the valve directly on the outlet flanges of pumps. A typical application is the unloading of pumps in an accumulator circuit. The combination of an R5U, C5V and R5V on a double pump generates a high pressure/low pressure system without the need of a manifold block or piping between the valves. The R5U is optionally available with a vent function for unpressurized circulation.

Markets:
• Industrial

Features/Benefits:
• Maximum adjustable pressure of 350 bars and flow capacity ranging from 90 l/min to 600 l/min - high performance
• Sophisticated pilot stage design - reduces pressure overshoot and cracking flow to a minimum, thus reducing heating, power and production losses in high pressure operation
• Design combines a poppet type seat valve with the pilot control - precise adjustment and quick response to eliminate pressure variation and system shocks
• Short delivery time - no warehousing necessary
• 3-port body with SAE61 flange - enables compact design
• 4 sizes (SAE ¾", 1", 1¼", 1½")
• 3 pressure stages
• 3 adjustment modes
    - Hand knob
    - Acorn nut with lead seal
    - Cylinder lock
• With optional vent function

Applications:
• Suitable for general hydraulic applications

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SKU	Availability	Price	Weight	Flow Rate	Body Material	Mounting Type	Seal Material	Actuation Type	For Fluid Type	Operation Type	Product Series	Maximum Flow Rate	Division	Maximum Operating Pressure	Maximum Operating Temperature	Minimum Operating Temperature	Body Type	Frequency	Flange Size	Maximum Pressure Setting	Drain Option	Signal Input	Seal Material	Port Connection	Switching Option	Additional Options	Pressure Control Range	Pressure Adjustment Control Type
026-30602-H	Backordered	POR	9.7 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Solenoid	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	210 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	210 bar	Drain line external via port X1 or X2, internal	24 VDC	NBR	SAE 1 1/2	Solenoid not activated unpress. circulation	NA	210 bar	Hand knob
026-37740-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	350 bar	Acorn nut with lead seal
026-39439-H	Backordered	POR	9.7 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Solenoid	Water-Glycol According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	210 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	210 bar	Drain line external via port X1 or X2, internal	24 VDC	NBR	SAE 1 1/2	Solenoid not activated unpress. circulation	NA	210 bar	Acorn nut with lead seal
026-53552-0	Backordered	POR	3.6 kg	90 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 3/4	Omit	NA	210 bar	Hand knob
026-53553-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	210 bar	Hand knob
026-53554-0	Backordered	POR	5.2 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	280 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	280 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1 1/4	Omit	NA	210 bar	Hand knob
026-53555-0	Backordered	POR	8 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	210 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	210 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1 1/2	Omit	NA	210 bar	Hand knob
026-55664-H	Backordered	POR	6.3 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Solenoid	Water-Glycol According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	24 VDC	NBR	SAE 1	Solenoid not activated unpress. circulation	NA	105 bar	Acorn nut with lead seal
026-56669-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	105 bar	Hand knob
026-56669-5	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	FPM	Manual	Water-Glycol	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	FPM	SAE 1	Omit	NA	105 bar	Hand knob
026-56944-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, external	Omit	NBR	SAE 1	Omit	NA	105 bar	Hand knob
026-56974-H	Backordered	POR	6.3 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Solenoid	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	24 VDC	NBR	SAE 1	Solenoid not activated unpress. circulation	NA	210 bar	Hand knob
026-57002-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	105 bar	Acorn nut with lead seal
026-57033-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Water-Glycol According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, external	Omit	NBR	SAE 1	Omit	NA	210 bar	Hand knob
026-57077-H	Backordered	POR	6.3 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Solenoid	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	24 VDC	NBR	SAE 1	Solenoid not activated unpress. circulation	NA	210 bar	Acorn nut with lead seal
026-57126-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	350 bar	Hand knob
026-57281-0	Backordered	POR	8 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Water-Glycol According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	210 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	210 bar	Drain line external via port X1 or X2, external	Omit	NBR	SAE 1 1/2	Omit	NA	210 bar	Hand knob
026-57916-0	Backordered	POR	5.2 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	280 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	280 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1 1/4	Omit	NA	105 bar	Hand knob
026-62517-0	Backordered	POR	8 kg	600 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Hydraulic Oil According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	210 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	210 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1 1/2	Omit	NA	105 bar	Hand knob
026-65006-0	Backordered	POR	4.6 kg	300 L/min	Cast Iron	Flanged according SAE	NBR	Manual	Water-Glycol According to DIN 51524	Pilot	Pressure Valve	n/a	Industrial Systems Division Europe	350 bar	60 °C	-20 °C	3-Port M,Y1,X = G 1/4	n/a	SAE61	350 bar	Drain line external via port X1 or X2, internal	Omit	NBR	SAE 1	Omit	NA	210 bar	Acorn nut with lead seal

Pilot Operated Pressure Unloading Valve, SAE Flange - Series R5U

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