Fire safe disc valve

Details Fire safe disc valve Fire safe disc valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/29

F16K 1/22 (2006.01) F16K 1/226 (2006.01) F16K 17/38 (2006.01)

Patent

CA 1102776

FIRE SAFE DISC VALVE Abstract of Disclosure A fire safe disc valve comprising a valve body having a flow passageway therethrough, a disc shaft rotatably mounted in the flow passageway and a disc mounted on the disc shaft, the disc being rotatable to and from a posi- tion normally closing the flow passageway by sealingly engaging a disc sealing member. An operating stem, ex- tending through a stem operating aperture in the valve body, engages the disc shaft for rotation thereof, and an elastomeric packer seals the aperture about the operating stem. The disc shaft is displaceable along the flow passageway whereby the disc will close the passageway if the disc sealing member is destroyed, and the operating stem is axially displaceable in the stem operating aperture whereby the aperture is sealed by fluid pressure pressing the operating stem against a stem sealing seat if the stem packer is destroyed.

309060

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