US 12,259,064 B2
Valve with pressure differential seating
Bob McGuire, Meridian, OK (US); Danny Artherholt, Asher, OK (US); Mickey Claxton, Oklahoma City, OK (US); and Blake Mullins, Edmond, OK (US)
Assigned to Oil States Energy Services, L.L.C., Houston, TX (US)
Filed by OIL STATES ENERGY SERVICES, L.L.C., Houston, TX (US)
Filed on Mar. 29, 2023, as Appl. No. 18/192,459.
Application 18/192,459 is a continuation in part of application No. 16/988,283, filed on Aug. 7, 2020, granted, now 11,655,900.
Application 16/988,283 is a continuation in part of application No. 16/663,077, filed on Oct. 24, 2019, granted, now 11,028,929, issued on Jun. 8, 2021.
Claims priority of provisional application 62/754,081, filed on Nov. 1, 2018.
Prior Publication US 2023/0235823 A1, Jul. 27, 2023
Int. Cl. F16K 5/20 (2006.01); F16K 3/02 (2006.01); F16K 3/20 (2006.01); F16K 5/06 (2006.01); F16K 5/18 (2006.01)
CPC F16K 5/205 (2013.01) [F16K 3/0236 (2013.01); F16K 3/207 (2013.01); F16K 5/0605 (2013.01); F16K 5/0678 (2013.01); F16K 5/0689 (2013.01); F16K 5/181 (2013.01); F16K 5/188 (2013.01); F16K 5/201 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A valve comprising:
a valve body defining a central longitudinal axis, the valve body comprising:
a first interior bore extending along the central longitudinal axis of the valve body; and
a cavity extending across the first interior bore and the central longitudinal axis;
a ball disposed within the cavity, the ball comprising:
an exterior surface; and
a second interior bore extending through the ball across a central longitudinal axis of the ball, wherein the ball is operable to rotate between an open position in which the second interior bore permits flow across the ball and through the first interior bore and a closed position in which the exterior surface of the ball prevents flow through the first interior bore; and
a seat disposed within said cavity, the seat comprising:
a curved surface to complement a portion of the exterior surface of the ball and configured to seal with the exterior surface of the ball, wherein the curved surface has an axial component parallel to the central longitudinal axis and a normal component normal to the central longitudinal axis;
a normal surface axially spaced apart from the curved surface and normal to the central longitudinal axis, wherein the normal surface comprises a surface area larger than a projected normal surface area of the normal component of the curved surface; and
a seat bushing disposed within said cavity, the seat bushing comprising:
a second normal surface normal to the central longitudinal axis; and
a third normal surface axially spaced apart from the second normal surface and normal to the central longitudinal axis, wherein the third normal surface comprises a surface area larger than the second normal surface.