Fisher Controls International LLC

James R Davis

Robert Wilson

Melvin L Osgood

A separable flange retainment system includes a first boss on the flange and a mating second boss on a valve body. The boss on the valve body has a threaded aperture for reception of a suitable fastener. A generally U shaped retainer device having an orifice in its bight portion straddles the bosses and is secured in position by the fastener. The retainer device precludes lateral and rotational movement between the flange and the body.

Valve flange retainment system

A fluid valve for use in elevated pressure and temperature conditions. Composition material wiper rings are provided in the packing bore between the packing follower and the packing box ring. The composition wiper rings have an inner diameter substantially the same as the valve stem diameter to inhibit the extrusion of packing material during sliding valve operation.

Valve stem packing containment for high pressure, high temperature

A fluid valve with improved valve trim for reliable fluid shut off in high pressure applications. The improved valve trim includes a flexible metal seat with a lip portion which flexes outwardly upon sealing contact with a valve plug seating surface. A deformable seal mounted in the seat is prevented from substantial outward movement by a rigid metal seal retainer and is squeezed outwardly around the plug seating surface as the seat lip portion flexes outwardly.

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Marshalltown, IA, United States of America

James R Davis