Dual check valve

Details Dual check valve Dual check valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/57, 137/64

F16K 15/02 (2006.01) F16K 15/06 (2006.01) F16K 17/04 (2006.01)

Patent

CA 2016277

A valve housing is provided with an interior passage therethrough with the passage having two spaced apart valve seats; a first check valve member for engaging the first valve seat has a valve stem movably carried in a hollow shaft; the second valve member is itself provided with a tubular stem having an open end and which is slidably fitted on the exterior of the hollow shaft; separate coil springs are provided for urging each valve member toward a closed position on the respective valve seat whereby the each valve member is operable independently of the other valve member.

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