Russell E Stevens

US Patent:

45317119, Jul 30, 1985

Filed:

Jun 30, 1982

Appl. No.:

6/393539

Inventors:

Paul D. Bunch - Houston TX
Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 4104

US Classification:

251214

Abstract:

A valve having a valve member with a stem connected to an actuator and an improved stem seal for sealing between the stem and the interior of the body on a bonnet attached thereto. The improved stem sealing assembly includes a U-shaped resilient seal ring with means in its open end to ensure sealing engagement of the multiple internal and external sealing lips with the stem and body sealing surfaces and support rings positioned in grooves between the sealing lips and anti-extrusion means engaging the closed end of the seal ring to prevent extrusion of the seal ring. A modified sealing assembly also includes a back-up seal and anti-extrusion means therefor.

US Patent:

46291610, Dec 16, 1986

Filed:

May 2, 1985

Appl. No.:

6/729622

Inventors:

Taylor L. Jones - Houston TX
Paul D. Bunch - Houston TX
Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 146

US Classification:

251328

Abstract:

A gate valve having a body with a valve chamber therein, an inlet passage through the body into the valve chamber, an outlet passage through the body into the valve chamber, a gate positioned within the chamber and having an opening therethrough, a body sealing surface surrounding the openings of each of the inlet and outlet passages within the passages within the chamber, a seat ring positioned between the gate and each of the body sealing surfaces, means for urging the seat rings against their body sealing surfaces, resilient seals between each seat ring and its body sealing surface near the inner and outer diameter of each ring, means for sealing between the gate and the seal rings, and means for moving said gate in said chamber to close and open flow through said valve. The means urging the seat rings against their body sealing surfaces in one form includes wedges positioned at the side of the gate engaged between the two seat rings and in another form includes springs positioned at the sides of the gate engaged between the two seat rings.

US Patent:

44899165, Dec 25, 1984

Filed:

Apr 7, 1982

Appl. No.:

6/366367

Inventors:

Russell E. Stevens - Houston TX

Assignee:

Cameron Iron Works, Inc. - Houston TX

International Classification:

F16K 4104

US Classification:

251214

Abstract:

An improved valve having a body with an inlet, an outlet, a valve chamber, a valve seat, a valve member movable in the valve chamber toward and away from said valve seat, a stem connected to said valve member a bonnet connected to and forming a part of the body a part of the body in the stem extending therethrough and an improved sealing assembly for sealing around the stem including a seal ring of extrudable material and means providing a space into which said seal ring extrudes to form a sealing lip extending toward the pressure and responsive to pressure exerted on the sealing assembly. Also the improved sealing assembly includes mating tapered wedging and seal rings having a small angle mating taper wedge the rings into sealing engagement with the walls against which they are to seal.