Valve bonnet assembly
First Claim
1. A valve bonnet assembly including an operating valve bonnet stem, rotation of the stem axially moving a valve member supported on the stem along a stem axis and into and out of sealing engagement with a seat, the bonnet stem including a multiple start thread wherein the thread pitch divided by the number of starting threads is greater than or equal to six and less than or equal to ten.
3 Assignments
0 Petitions
Accused Products
Abstract
The valve bonnet assembly (1) includes a bonnet stem and a valve member supported on the stem. Rotation of the stem (16) axially moves the valve member (12) along the stem axis into and out of sealing engagement with a seat (11). The bonnet stem includes multiple start threads, and the thread pitch divided by a number of starting threads is greater than or equal to 6 and less than or equal to 9.
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Citations
16 Claims
- 1. A valve bonnet assembly including an operating valve bonnet stem, rotation of the stem axially moving a valve member supported on the stem along a stem axis and into and out of sealing engagement with a seat, the bonnet stem including a multiple start thread wherein the thread pitch divided by the number of starting threads is greater than or equal to six and less than or equal to ten.
- 7. A valve bonnet assembly for use on a manifold for supporting two or more operating valves, a pressure line spacing between the two valves from 2.0 to 2.250 inches, and the bonnet stem utilizing three or more starting threads, wherein a thread pitch divided by the number of starting threads is greater than or equal to six and less than or equal to ten.
- 11. A valve including a body having a seat and an operating valve bonnet stem, rotation of the stem axially moving a valve member supported on the stem along a stem axis and into and out of sealing engagement with the seat, the bonnet stem including a multiple start thread wherein the thread pitch divided by the number of starting threads is greater than or equal to six and less than or equal to ten.
Specification