Gate valve

Patent metadata

Field	Value
Publication number	US-11536376-B2
Application number	US-202017038713-A
Country	US
Kind code	B2
Filing date	Sep 30, 2020
Priority date	Sep 30, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

In embodiments, a gate valve includes a body including a flow passage from a first opening to a second opening, and a gate channel from the flow passage to a third opening, the gate channel having a central longitudinal axis and a ridge defining a perimeter of the opening. A valve cover can fit over the third opening and exert a clamping force on the ridge, the clamping force having a first force component perpendicular to the central longitudinal axis and a second force component parallel with the central longitudinal axis. In embodiments, a valve cover includes a first mating surface configured to extend over an opening of the gate valve, a first clamping section extending at a first non-parallel angle from a first side of the first mating surface, and a second clamping section extending at a second non-parallel angle from a second side of the first mating surface.

First claim

What is claimed is:

1. A gate valve comprising:
a valve body including a first opening, a second opening, a third opening, a first side, a second side separate and distinct from the first side of the valve body, a flow passage from the first opening to the second opening, a gate channel from the flow passage to the third opening, a first bolt flange extending from the first side of the valve body, and a second bolt flange extending from the second side of the valve body, the gate channel having a central longitudinal axis and a ridge defining a perimeter of the opening; and
a valve cover including a first side, a second side separate and distinct from the first side of the valve cover, a third bolt flange extending from the first side of the valve cover, and a fourth bolt flange extending from the second side of the valve cover, the valve cover configured to fit on the valve body over the third opening, aligning the third bolt flange with the first bolt flange and the fourth bolt flange with the second bolt flange, and as a result of force parallel to the central longitudinal axis on the valve cover toward the valve body, to exert a clamping force on the ridge, the clamping force having a first force component perpendicular to the central longitudinal axis and a second force component parallel with the central longitudinal axis.

2. The gate valve of claim 1 , wherein the ridge includes a slot to fit a seal element.

3. The gate valve of claim 2 , wherein the ridge includes a first flat surface configured to mate with a first surface of the valve cover, and a second flat surface configured to mate with a second surface of the valve cover, the slot extending between the first flat surface and the second flat surface.

4. The gate valve of claim 1 , wherein the first bolt flange and the second bolt flange extend less than fully annularly in totality around the gate channel.

5. The gate valve of claim 1 , wherein the valve cover comprises:
a first mating surface configured to extend over the third opening, the first mating surface having a first side and a second side, the first side opposite the second side;
a first clamping section extending at a first non-parallel angle from the first side of the first mating surface; and
a second clamping section extending at a second non-parallel angle from the second side of the first mating surface.

6. The gate valve of claim 5 , wherein the first mating surface includes a first mating section, a second mating section extending from the first mating section at oblique angle, and a third mating section extending from the first mating section at an oblique angle.

7. The gate valve of claim 6 , wherein the first clamping section and the second clamping section each extend from the first mating section, the second mating section, and the third mating section of the first mating surface.

8. The gate valve of claim 1 , wherein the valve cover includes a first pin flange, a second pin flange, a third pin flange, and a fourth pin flange, the first pin flange having a first pin hole, the second pin flange having a second pin hole, the third pin flange having a third pin hole, the fourth pin flange having a fourth pin hole, the first pin hole in axial alignment with the second pin hole, the third pin hole in axial alignment with the fourth pin hole.

9. The gate valve of claim 8 , further comprising a cap, the valve cover further comprising an opening, the cap having a fifth pin flange and a sixth pin flange, the fifth pin flange having a fifth pin hole, the sixth pin flange having a sixth pin hole, the cap configured to be moved into a sealing position over the opening, in the sealing position, the fifth pin flange configured to fit between the first pin flange and the second pin flange, the sixth pin flange configured to fit between the third pin flange and the fourth pin flange, the fifth pin hole configured to align with the first pin hole and the second pin hole, and the sixth pin hole configured to align with the third pin hole and the fourth pin hole.

10. The gate valve of claim 1 , wherein the valve cover has a first sealing surface and a second sealing surface, the second sealing surface protruding from the first sealing surface.

11. The gate valve of claim 10 , further comprising a gasket sized and shaped to mate with the first sealing surface of the valve cover and to extend around the second sealing surface.

12. The gate valve of claim 11 , further comprising a cap, the valve cover further comprising an opening, the cap configured to fit over the opening, around the second sealing surface of the valve cover, and onto the first sealing surface of the valve cover or the gasket.

13. The gate valve of claim 1 , wherein the gate channel is defined by at least a first side wall, a second side wall, a third side wall, and a fourth side wall, the first side wall opposite the second side wall, the third side wall opposite the fourth side wall, the third and fourth sidewalls between the first and second sidewalls, a distance between the first and second side walls being shorter than a distance between the third and fourth side walls, wherein the valve body includes a first flange and a second flange, the first flange extending from the third side wall and the second flange extending from the fourth side wall.

14. The gate valve of claim 1 , wherein the first force component of the clamping force is directed toward the gate channel.

15. The gate valve of claim 1 , wherein the ridge has a first portion and a second portion, the first force component of the clamping force on the first portion directed toward the second portion.

16. A gate valve comprising:
a valve body including a first opening, a second opening, a third opening, a flow passage from the first opening to the second opening, and a gate channel from the flow passage to the third opening, the gate channel having a central longitudinal axis and a ridge defining a perimeter of the opening; and
a valve cover configured to fit over the third opening and, as a result of force parallel to the central longitudinal axis on the valve cover toward the valve body, to exert a clamping force on the ridge, the clamping force having a first force component perpendicular to the central longitudinal axis and a second force component parallel with the central longitudinal axis,
the valve cover including a first pin flange, a second pin flange, a third pin flange, and a fourth pin flange, the first pin flange having a first pin hole, the second pin flange having a second pin hole, the third pin flange having a third pin hole, the fourth pin flange having a fourth pin hole, the first pin hole in axial alignment with the second pin hole, the third pin hole in axial alignment with the fourth pin hole.

17. The gate valve of claim 16 , further comprising a cap, the valve cover further comprising an opening, the cap having a fifth pin flange and a sixth pin flange, the fifth pin flange having a fifth pin hole, the sixth pin flange having a sixth pin hole, the cap configured to be moved into a sealing position over the opening, in the sealing position, the fifth pin flange configured to fit between the first pin flange and the second pin flange, the sixth pin flange configured to fit between the third pin flange and the fourth pin flange, the fifth pin hole configured to align with the first pin hole and the second pin hole, and the sixth pin hole configured to align with the third pin hole and the fourth pin hole.

18. A gate valve comprising:
a valve body including a first opening, a second opening, a thir

Assignees

• Kennedy Valve Company

Inventors

• Kennedy Paul

Classifications

• F16K27/047

  with wedge-shaped obturating members · CPC title

• F16K3/12 Primary

  with wedge-shaped arrangements of sealing faces · CPC title

• F16K31/508

  the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element · CPC title

• F16K3/14

  with special arrangements for separating the sealing faces or for pressing them together · CPC title

• F16K3/186

  by means of cams of wedge from · CPC title