Ball valve having dual integral seats with a leak detection...

Details Ball valve having dual integral seats with a leak detection... Ball valve having dual integral seats with a leak detection...

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/08 (2006.01) F16K 5/06 (2006.01) F16K 25/00 (2006.01)

Patent

CA 2213879

A ball valve for controlling the flow of a fluid is provided having primary and secondary annular sealing seats which are disposed in the body cavity for the purpose of providing a seal between the valve body and a first hemisphere of a ball. An annular leak detection channel is defined between the primary and secondary annular sealing seat for collecting fluid that leaks past the primary sealing seat. A purge is defined in the valve body extending from the channel to the exterior of the valve body, for establishing fluid through-flow and for draining fluid away from the secondary sealing seat that collects in the channel. A third annular sealing seat sealingly engages a second hemisphere of the ball.

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