F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/45
F16K 5/00 (2006.01) F16K 1/226 (2006.01) F16K 1/228 (2006.01)
Patent
CA 1106828
ABSTRACT OF THE DISCLOSURE An annular valve seat having a resilient metal seal for use in a variety of types of valves provides positive control of fluid flow, with effective metal-to- metal sealing, long life and easy replacement of the seal. The metal seal is in the form of an annular ring compris- ing approximately one-quarter of a torus that cooperates with the valve's flow control element to establish a metal-to-metal fluid seal which is especially useful at relatively high temperatures. A first edge portion of the torus is held in position against a radial surface of the valve`s body by a retainer ring which centers the torus about the flow control element. When the valve is closed the flow control element presses against the outside por- tion of the resilient metal torus forcing the free edge of the torus against a portion of the retainer ring so that the seal is loaded as a structural span supported at the ends by the valve's body and the retainer ring. The flow control element presses against the central portion of the span which deflects into a concave form to press tightly against the flow control element to effect a fluid-tight seal. The retainer ring and the torus are held in position in the valve body by a plurality of screws so that the ring and torus may be quickly and easily removed for ser- vicing or for replacement. -1a-
324133
Broadway William W.
Sternenberg James E.
Fetherstonhaugh & Co.
Fmc Corporation
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