Check Valve with Thermal Relief

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

Parker’s poppet style check valve with integrated thermal relief is capable of flows up to 130 lpm (40 gpm) and pressures up to 420 bar (6,000 psi). This unique thermal relief valve is designed to help protect the circuit from hydraulic fluid thermal expansion due to ambient or system temperature rise. Additionally, this valve will also act to relieve pressure spikes due to shocks seen by the hydraulic system. Circuit designers can also utilize a Parker supplied pilot spool to create a pilot operated check valve with the thermal relief functions.

Markets:
• Aerial
• Construction Equipment
• Forestry Equipment
• Material Handling Equipment
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• Poppet type for minimal leakage – less than 3 drops/min
• Hardened working parts for maximum durability
• Relief feature to give thermal and shock relief
• Single and dual pilot pistons available to create pilot to open check
• Compact design
• High tolerance for contamination
• All external parts zinc plated

Applications:
• Machinery in hot work environments
• Actuators that experience high levels sun exposure
• Implements that may be detached from main hydraulic circuit for long periods of time
• Applications or machinery that contains quick disconnect couplers

Additional Technical Insight:
Can also use a Parker supplied pilot spool to create a pilot operated check valve with the thermal relief functions. This valve’s operation allows free flow from port 1 to 2 and integral thermal relief function from port 2 to 1 to protect the circuit from thermal expansion of hydraulic fluid.

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SKU	Availability	Price	Body Material	Maximum Operating Temperature	Connection Size	Connection Type	Seal Material	Maximum Operating Pressure	For Fluid Type	Flow Direction	Filter Efficiency Rating	Maximum Kinematic Viscosity	Weight	Minimum Operating Temperature	Mounting Type	Actuation Type	Division	Valve Material	Operating Temperature	Maximum Inlet Pressure Rating	Cavity Size	Installation Torque	Flow Rate	Function	Leak Rate	Cracking Pressure	Maximum Flow Rate	Configuration	Operation Type	Pressure Relief Setting	Seal Material	Cracking Pressure	Flow Rate	Pressure Relief Setting
D04F2-2.5-245N	Backordered	POR	N/A	250 °F	n/a	n/a	Nitrile	6000 psi	Synthetic Hydraulic Fluids	Bi-directional	ISO 4406 18/16/13	45-2000 SSU (6 to 420 cSt)	0.13 kg	-34 °C	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Steel (all parts)	-30 to 250 °F	420 bar	C10-2	37 lb-ft	40 Gal/min	Thermal Relief	3 drops/min @ Crack Pressure	36 psi	130 L/min	Poppet Type	Check Valve W/Relief Feature	3553 psi	Nitrile	36 PSI, 2.5 BAR	40 GAL/MIN, 130 L/MIN	3553 PSI, 245 BAR
D04F2-2.5-276N	Backordered	POR	N/A	250 °F	n/a	n/a	Nitrile	420 bar	Synthetic Hydraulic Fluids	Bi-directional	SAE Class 4	45-2000 SSU (6 to 420 cSt)	0.29 lb	-34 °C	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Steel (all parts)	-30 to 250 °F	420 bar	C10-2	37 lb-ft	130 L/min	Thermal Relief	3 drops/min @ Crack Pressure	36 psi	40 Gal/min	Poppet Type	Check Valve W/Relief Feature	4000 psi	Nitrile	36 PSI, 2.5 BAR	40 GAL/MIN, 130 L/MIN	4000 PSI, 276 BAR
D04F2-2.5-35N	Backordered	POR	N/A	121 °C	n/a	n/a	Nitrile	420 bar	Synthetic Hydraulic Fluids	Bi-directional	ISO 4406 18/16/13	45-2000 SSU (6 to 420 cSt)	0.29 lb	-34 °C	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Hardened Steel (all operating parts)	-30 to 250 °F	420 bar	C10-2	37 lb-ft	40 Gal/min	Thermal Relief	3 drops/min @ Crack Pressure	2.5 bar	130 L/min	Poppet Type	Check Valve W/Relief Feature	35 bar	Nitrile	36 PSI, 2.5 BAR	40 GAL/MIN, 130 L/MIN	507 PSI, 35 BAR
D04F2-2.5-90N	Backordered	POR	N/A	121 °C	n/a	n/a	Nitrile	420 bar	Synthetic Hydraulic Fluids	Bi-directional	SAE Class 4	45-2000 SSU (6 to 420 cSt)	0.29 lb	-34 °C	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Hardened Steel (all operating parts)	-30 to 250 °F	420 bar	C10-2	37 lb-ft	130 L/min	Thermal Relief	3 drops/min @ Crack Pressure	2.5 bar	130 L/min	Poppet Type	Check Valve W/Relief Feature	90 bar	Nitrile	36 PSI, 2.5 BAR	40 GAL/MIN, 130 L/MIN	1305 PSI, 90 BAR
D04F2-7.0-245N	Backordered	POR	N/A	250 °F	n/a	n/a	Nitrile	420 bar	Mineral-based Hydraulic Fluids	Bi-directional	SAE Class 4	45-2000 SSU (6 to 420 cSt)	0.29 lb	-34 °C	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Hardened Steel (all operating parts)	-30 to 250 °F	420 bar	C10-2	50 Nm	40 Gal/min	Thermal Relief	3 drops/min @ Crack Pressure	102 psi	130 L/min	Poppet Type	Check Valve W/Relief Feature	245 bar	Nitrile	102 PSI, 7 BAR	40 GAL/MIN, 130 L/MIN	3553 PSI, 245 BAR
D04F2-7.0-276N	Backordered	POR	N/A	121 °C	n/a	n/a	Nitrile	420 bar	Mineral-based Hydraulic Fluids	Bi-directional	SAE Class 4	45-2000 SSU (6 to 420 cSt)	0.13 kg	-30 °F	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Steel (all parts)	-30 to 250 °F	6000 psi	C10-2	50 Nm	40 Gal/min	Thermal Relief	3 drops/min @ Crack Pressure	7 bar	130 L/min	Poppet Type	Check Valve W/Relief Feature	4000 psi	Nitrile	102 PSI, 7 BAR	40 GAL/MIN, 130 L/MIN	4000 PSI, 276 BAR
D04F2-7.0-35N	Backordered	POR	N/A	250 °F	n/a	n/a	Nitrile	6000 psi	Synthetic Hydraulic Fluids	Bi-directional	ISO 4406 18/16/13	45-2000 SSU (6 to 420 cSt)	0.29 lb	-30 °F	Screw-in Cartridge	Pressure Sensing	Mobile Hydraulic Systems Division Europe	Hardened Steel (all operating parts)	-30 to 250 °F	6000 psi	C10-2	50 Nm	130 L/min	Thermal Relief	3 drops/min @ Crack Pressure	102 psi	130 L/min	Poppet Type	Check Valve W/Relief Feature	35 bar	Nitrile	102 PSI, 7 BAR	40 GAL/MIN, 130 L/MIN	507 PSI, 35 BAR

Check Valve with Thermal Relief

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