Check Valve with Thermal Relief

Parker’s D04F2 is a poppet style check valve capable of flows up to 40 gallons per minute. Integral to this valve is a thermal relief valve that protects the circuit from expansion of the hydraulic fluid due to temperature rise. This relief will also act to relieve pressure spikes due to shock. Designers can use Parker supplied pilot spools to create a pilot operated check valve with the thermal relief functions. Common industries where these valve are found:
Forestry
Aerial Lift
Crane
Construction Equipment
Industrial Equipment