Keystone International Holdings Corp.

Virgo Engineers, Inc.

Tyco Flow Control, Inc.

Keystone Valvtron, Inc.

Marvin E Beasley

Embodiments and methods are disclosed herein that relate to a valve assembly. The valve assembly includes a housing having a passage formed therethrough, and a valve ball having a through hole and disposed in the housing, in which the valve ball is rotatable between an open position that has the through hole aligned with the passage and a closed position that has the through hole misaligned with the passage. The valve assembly further includes a first seat having a first sealing surface and disposed in the housing adjacent to the valve ball, and a second seat having a second sealing surface and disposed in the housing adjacent to the first seat such that the first sealing surface of the first seat is disposed adjacent to the second sealing surface of the second seat. At least one of the first sealing surface of the first seat and the second sealing surface of the second seat comprises an arcuate surface.

Ball valve having multiple moveable seats

Embodiments and methods are disclosed herein that relate to a valve assembly. The valve assembly includes a housing having a passage formed therethrough, and a valve ball having a through hole and disposed in the housing, in which the valve ball is rotatable between an open position that has the through hole aligned with the passage and a closed position that has the through hole misaligned with the passage. The valve assembly further includes a seat having a first tapered surface and disposed in the housing adjacent to the valve ball, wherein the seat is biased towards the valve ball, and a seat holder having a second tapered surface and disposed in the housing adjacent to the seat such that the first tapered surface of the seat is disposed adjacent to the second tapered surface of the seat holder.

Bi-directional sealing ball valve

A switch valve,is provided with an upper body,having a plurality of outlet ports,A,,B, and,C and a lower body housing,with inlet port,. The switch valve includes a ball member,which is rotatable within the switch valve body,for selective fluid communication between the inlet port,and the selected one of the plurality of outlet ports. The ball,is rotated by a stem,, which may be powered by an actuator unit. The upper body,includes a substantially dome-shaped seating surface,for sealing engagement with the outer surface,of the ball. The biasing member,biases the ball radially in a direction opposite the ball inlet port,to obtain the desired sealing engagement. The biasing member is preferably a Belleville spring,having a single wrap design.

Switch valve

A top entry floating ball valve (10) and method of assembly including a downstream metal seat (62) mounted within an annular recess about a downstream flow passage (22) and an upstream metal seat (80) urged by a Belleville spring (78) into engagement with ball closure member (24). Ball closure member (24) is urged by Belleville spring (78) into sealing relation with downstream metal seat (62). A smooth planar wall surface (16) is defined by valve chamber (14) about the inlet flow passage (20) and Belleville spring (78) may be easily inserted within the valve chamber (14) along smooth planar wall surface (16) behind upstream metal seat (80). Upstream metal seat (80) has an inner spherical surface (82) conforming to the outer spherical surface (26) of ball closure member (24) and may be easily moved manually along the spherical surface (26) for assembly and disassembly.

Top entry ball valve and method of assembly

An isolator flow control apparatus (10) especially to selectively control communication of a contained fluid to an overpressure protection system. The isolator apparatus (10) includes a flow housing (12) having a single inlet opening (20) placed in fluid communication by an internal manifold means with a plurality of outlet openings (22, 24). A floating rotatable ball closure member (28, 30) is operably disposed in each of the outlet openings (22, 24) for effecting a metal-to-metal seal with a fixed downstream seat (16d, 18d). The ball closure members (28, 30) are interlocked by a shaft (34) in a passage (14b) extending between enlarged diameter portions (22a, 24A) receiving the ball closure members (28, 30). The ball closure members (28, 30) are actuated by an operator means (40) for automatically closing or isolating a selected outlet opening (22 or 24) while opening another outlet opening (22 or 24) to ensure continuous fluid flow or fluid communication through the isolator apparatus (10).

Fluid pressure isolator apparatus

A ball valve (10) has a one-piece valve body (12) with a small diameter bore (16) and an opposed large diameter bore (18) in fluid communication with a valve chamber (14). An annular flange (40) projects within the large diameter bore (18) and a washer-type square spring (50) is inserted within the central opening (44) defined by the flange (40) and then positioned in centered relation on the shoulder (42) defined by the flange (40) for urging the ball valve member (24) into seated position against an annular seat (22) about small diameter bore (16).

Ball valve and method of assembly

Disclosed is a new and improved method and apparatus for automatically lapping a ball and a seat of a valve to produce a non-flat lapped sealing surface finish that provides a reliable fluid seal at minimum cost. Either the seat or ball is rotated as the work piece by the apparatus while in contact with the surface of a lap member which may be the mating seal part. The lap member is held or maintained in a desired angular or tilt relationship with the work piece. A controllable force spring is provided to maintain the desired lapping force between the work piece and lap member. While the lap member is blocked from rotation about the tilt angle and apparatus swings or oscillates the lap member about the work piece to maximize the effectiveness of the lapping contact.

Growing community of inventors

Houston, TX, United States of America

Marvin E Beasley