Excess flow valve

Details Excess flow valve Excess flow valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/20 (2006.01) F16K 17/30 (2006.01)

Patent

CA 2155683

A poppet type excess flow valve comprises a body forming a valve chamber having a first portion of a first diameter adjacent a first end and a second portion of a second smaller diameter adjacent second end. A valve seat is located between the first and second portions of the valve chamber. A poppet element is mounted in the valve chamber and includes a first section in the form of a hollow cylindrical body extending into the second portion of the valve chamber and terminating therein in an open end. The outer diameter of the hollow cylindrical body section is only slightly less than the diameter of the second portion of the valve chamber for guided sliding movement therein. The poppet element further includes a second section located in the first portion of the valve chamber and including an end wall carrying a valving surface extending radially outward for cooperation with the valve seat. A compression coil spring maintains the poppet element continually biased under a predetermined force toward the inlet port, and flow passages are formed through the hollow cylindrical body portion of the poppet element at a location closely adjacent the valving surface.

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