Butterfly valve and a method of manufacture of said valve

Details Butterfly valve and a method of manufacture of said valve Butterfly valve and a method of manufacture of said valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/27

F16K 1/22 (2006.01) F16K 27/02 (2006.01)

Patent

CA 1144908

A BUTTERFLY VALVE AND A METHOD OF MANUFACTURE OF SAID VALVE Abstract of the Disclosure The butterfly valve comprises a valve body traversed by a passageway and a closure element or butterfly valve disk placed transversely with respect to the passageway. An annular bearing surface of the valve disk is intended to bear on a valve seat placed within the passageway. The valve body is constituted by an annular member provided with a chimney in which an operating shaft is mounted. The annular member is supported in leak-tight manner by a bearing ring having a greater thickness in the radial direction than the wall of the annular member. The bearing ring is inserted between the two end portions of the piping system and forms part of the valve body under operational conditions. -1-

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