Fisher Controls International LLC

Other

William J Bonzer

Gary L Scott

John W Duffy

Douglas C Pfantz

Herbert H Walton

James Lyman Griffin, Jr

Paul Robert Adams

Dennis Gene Sickels

Frank E Jensen

Steven D Kehoe

Donald K Day

Bernard Cornu

Robert D Gaskill

William H Earney

Ralph W Zeigler

A fluid control valve having a valve body, a cage, and a flexible elastomeric diaphragm with a formed convolution to fully open the cage opening. An elastomeric diaphragm regulator with a flow diverter in the fluid flow path to reduce fluid flow separation and thereby reduce the required flow recovery area before pressure throttling. A raised knife edge seat located on the cage top in a position of stagnant fluid flow to reduce the build-up of contaminants on the seat. An elastomeric diaphragm regulator with a valve actuator coupled to a guided valve stem attached to the regulator diaphragm.

Elastomeric element valve

A pressure unloading pilot operated fluid pressure regulator having a throttling element for controlling fluid flow. A pilot amplifier senses regulator outlet pressure and supplies suitable loading pressure coupled from an inlet supply pressure line through a variable flow restrictor to the throttling element. A check valve has a preset differential pressure defined between the check valve inlet and outlet and is mounted in parallel flow with the flow restrictor to limit the maximum differential pressure across the throttling element to the preset differential pressure of the check valve.

Pressure unloading pilot operated regulator having pressure limiting

A stabilizer for fluid pressure regulators enhancing regulator stability without affecting the regulator capacity. A stabilizer cartridge with a flexible flapper element has three flapper apertures symmetrically located around the flapper outer perimeter. Each aperture is centered within a window of the stabilizer. Means are provided to mount the stabilizer in proper location and orientation of the apertures within the regulator lower casing throat to sense downstream pressure without affecting regulator capacity.

Stabilizer for pressure regulator

A regulator valve having a globe type valve body includes a deformable diaphragm for controlling the fluid flow between the a fluid inlet and a fluid outlet. The deformation of the diaphragm, which is controlled by a pilot pressure introduced into a control chamber within the valve, causes the diaphragm to selectively covers and uncovers a plurality of apertures in a frustoconical baffle to control the flow through the valve. The valve includes a first diaphragm support provided in the control chamber and a second diaphragm support provided on the opposite side of the diaphragm. The second diaphragm support comprises a plurality of concentric cylinders and cross members which form an upper concave surface to correspond to a convex portion of the diaphragm so that the diaphragm is substantially uniformly supported.

Regulator valve with diaphragm support

A rolling diaphragm regulator valve is affixed in a globe type valve body and includes a non-stretchable fabric reinforced liner for covering and uncovering, by rolling action in response to changes in pressure in a control chamber, a plurality of slots in a baffle positioned between the valve body inlet and outlet. An axially movable spring-biased nose cone, mounted behind the diaphragm, provides a surface over which the diaphragm is draped for controlling substantially all movement of the diaphragm. A travel indicator is operable by movement of the nose cone to provide a visual indication of the position of the valve.

Control regulator having a rolling diaphragm

A rolling diaphragm regulator valve is affixed in a globe type valve body and includes a nonstretchable fabric reinforced elastomer diaphragm for covering and uncovering, by rolling action in response to changes in pressure in a control chamber, a plurality of apertures in a baffle positioned between the valve body inlet and outlet. An axially movable spring-biased nose piece, mounted behind the diaphragm, provides a surface over which the diaphragm is draped for controlling substantially all movement of the diaphragm. A travel indicator is operable by movement of the nose piece to provide a visual indication of the position of the valve. In one embodiment the baffle is notched adjacent to a peripheral mounting surface of the diaphragm, whereat the ends of the fabric reinforcement are exposed to permit entrained gases to escape. Other embodiments include areas of the diaphragm, exposed to the apertures, that have pinholes in the elastomer surface and that have the fabric surface exposed.

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Marshalltown, IA, United States of America

William J Bonzer