Valve and valve with seat insertion tool and extraction tool

Patent metadata

Field	Value
Publication number	US-9810328-B2
Application number	US-201514706198-A
Country	US
Kind code	B2
Filing date	May 7, 2015
Priority date	May 12, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A valve and tool assembly includes a valve seat, a valve seat recess, a seat carrier and a valve seat displacement tool. A valve seat installation tool is also described, as well as a valve seat replacement kit and a method for replacing a valve seat. The valve may be a diaphragm valve, for example.

First claim

The invention claimed is:

1. A valve and tool assembly, comprising:
a valve comprising a longitudinal axis and a valve seat recess,
a valve seat, and
a valve seat extraction tool that is attachable to said valve by an eccentric alignment member;
wherein the eccentric alignment member is adapted to be assembled with the valve to eccentrically align the valve seat extraction tool with the valve seat, wherein said eccentric alignment member has an alignment axis that is parallel to and radially offset from a centerline of the valve seat when the valve seat extraction tool is mounted to the valve body.

2. The valve and tool assembly of claim 1 , wherein the valve seat extraction tool comprises a seat engaging tip.

3. The valve and tool assembly of claim 2 , wherein the seat engaging tip comprises a threaded portion configured to self-tap a threaded connection with the valve seat when the tool is operated to bring the threaded portion into engagement with the valve seat.

4. The valve and tool assembly of claim 3 , wherein the seat engaging tip is attachable with the valve to eccentrically align the threaded portion with the valve seat.

5. The valve and tool assembly of claim 2 , wherein the seat engaging tip is attachable with the valve to eccentrically align the seat engaging tip with the valve seat.

6. The valve and tool assembly of claim 1 , wherein the alignment member comprises a retainer nut threadably adapted to be threadably mated with the valve body.

7. The valve and tool assembly of claim 6 , wherein the retainer nut comprises an internal bore having a central axis that is parallel to and radially offset from a center line of the valve seat, the internal bore receiving the valve seat extraction tool therethrough.

8. The valve and tool assembly of claim 7 , wherein the valve seat extraction tool comprises a cylindrical wall that is closely received and vertically slideable in the internal bore.

9. The valve and tool assembly of claim 6 , wherein the retainer nut comprises an alignment bore having a central axis that is coaxial with a center line of the valve seat, and an eccentric bushing received in the internal bore, the eccentric bushing comprising an alignment bore having a central axis that is parallel to and radially offset from the center line of the valve seat, the alignment bore receiving the valve seat extraction tool therethrough.

10. The valve and tool assembly of claim 9 , wherein the valve seat extraction tool comprises a cylindrical wall that is closely received and vertically slideable in the alignment bore.

11. The valve and tool assembly of claim 1 wherein said alignment member is threadably connectable with said valve.

12. A valve seat extraction tool assembly comprising a valve seat extraction tool having a threaded portion, and an eccentric alignment member that is adapted to be mounted to a valve body to align said threaded portion eccentrically with a valve seat, wherein said eccentric alignment member has an alignment axis that is parallel to and radially offset from a centerline of the valve seat when the valve seat extraction tool is mounted to the valve body.

13. The valve seat extraction tool assembly of claim 12 wherein said eccentric alignment member comprises a retainer nut that is adapted to be threadably mated with the valve body, and an eccentric bushing that is at least partially received in said retainer nut.

14. A valve seat extraction tool assembly comprising a valve seat extraction tool having a threaded portion, and an eccentric alignment member that is adapted to be mounted to a valve body to align said threaded portion eccentrically with a valve seat, wherein said eccentric alignment member comprises a retainer nut threadably adapted to be threadably mated with the valve body, the retainer nut comprises an internal bore having a central axis that is parallel to and radially offset from a center line of the retainer nut.

Assignees

• Swagelok Co

Inventors

• Glime Iii William H
• Clason Mark A
• Overton Jeffrey Nathan

Classifications

• Y10T137/0491

  Valve or valve element assembling, disassembling, or replacing · CPC title

• F16K1/425

  Attachment of the seat to the housing by plastical deformation, e.g. valve seat or housing being plastically deformed during mounting · CPC title

• Y10T137/6065

  Assembling or disassembling reciprocating valve · CPC title

• F16K7/16 Primary

  the diaphragm being mechanically actuated, e.g. by screw-spindle or cam · CPC title

• Y10T137/6109

  Tool for applying or removing valve or valve member · CPC title