Tight shutoff butterfly valve

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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251/27

F16K 1/00 (2006.01) F16K 27/02 (2006.01)

Patent

CA 1076540

TIGHT SHUTOFF BUTTERFLY VALVE ABSTRACT A butterfly valve assembly to be installed between pipeline flanges and secured by flange bolts is disclosed. A cylindrical valve body ring, having a cylindrical bore and a face portion at each end, has a resilient elastomer lining which covers the bore and extends over a portion of the faces. A disk is attached to a shaft which extends through the body ring and liner transverse to the axis of the body ring. The valve assembly has at least one face plate with an opening which circumscribes the portion of the liner extending over the face of the body ring. Inventor: Edward George Holtgraver

305210

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