Combination plug and two-way check valve

Details Combination plug and two-way check valve Combination plug and two-way check valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/61

F16K 5/06 (2006.01) F16K 15/03 (2006.01)

Patent

CA 1316791

"COMBINATION PLUG AND TWO-WAY CHECK VALVE" Abstract of the Disclosure A combination plug and two-way check valve formed of a valve body having a flow passageway therethrough, the body having an opening in the top communicating with the passageway, first and second valve seats in the body, a ball member rotatably received in the body between the seats, the ball having a flow passageway therethrough which is alignable with the passageways in the seats andhaving a top opening therein communicating with the passageway through the ball,a clapper pivotally supported within the ball and pivotal in a closed position blocking the passageway therethrough in an open position, a bonnet removably closing the body top opening, a stem rotatably received in the bonnet having theinner end connected to the ball, the ball being thereby rotatable to permit the flow of fluid in one direction, the clapper blocking flow of fluid in the opposite direction, and by rotating the ball 180° to permit the flow of fluid in the second direction, the clapper blocking flow in the first direction and wherein the ball may be rotated to a third position wherein fluid flow is blocked in either direction and in which the bonnet may be removed to provide access to the interior of the valve and into the interior of the ball whereby the clapper may be removed and replaced when the valve is in the closed position and subject to fluid pressure.

611720

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