Internal relief and bypass valve for pumps and piping systems

Details Internal relief and bypass valve for pumps and piping systems Internal relief and bypass valve for pumps and piping systems

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/04 (2006.01) F04B 49/035 (2006.01) F04B 53/10 (2006.01)

Patent

CA 2186063

A pressure relief or fluid bypass valve is provided which includes a valve body comprising a first piston, a second piston and a seating land disposed between the first and second pistons. The first piston is directed toward the discharge side of the fluid system; the second piston is disposed on the suction side of the fluid system. The first piston is configured to include an entrance orifice disposed toward the discharge side of the system and at least one exit orifice disposed between the second piston and the entrance orifice. A passageway provides fluid communication between the entrance orifice and the exit orifice. When the valve is in the fully open position, fluid is communicated from the discharge side, through the entrance orifice, through the passageway and out through the exit orifice to the suction side. The valve assembly includes a spring or other biasing means for biasing the valve body into the closed or sealed position.

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