IP Library Granted Patent US 8,887,755
Granted Patent B2
US 8,887,755 · App. 13/492,579 · Granted Nov 18, 2014

In-line repairable metal seated floating ball valve

Inventors: Vinh Van Nguyen (Houston, TX); Stanley C. Allen (Houston, TX)
Assignee: Bray International, Inc.
F16K5/06
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Quick Facts
Patent No.
US 8,887,755
App. No.
13/492,579
Granted
Nov 18, 2014
Kind
B2
Abstract

A metal seated floating ball valve for in-line repair has a valve body, a ball mounted in the valve body, a stem connected to the ball, and a bonnet connected to the valve body. The floating ball valve further has a first seat and a second seat adjacent the ball mounted in the valve body, an energizing ring mounted in the valve body proximate the first seat and in series with the first seat and the second seat, and a valve seat bias mounted in the valve body proximate the energizing ring and in series with the energizing ring. The energizing ring may have a slot near the upper end and a wedge surface along the lower end.

Claims (34)

1. A metal seated floating ball valve for in-line repair, wherein the metal seated floating ball valve has a valve body, a ball mounted in the valve body, a stem connected to the ball, and a bonnet connected to the valve body, comprising:

a first seat adjacent the ball mounted in the valve body;

a second seat adjacent the ball mounted in the valve body;

an energizing ring mounted in the valve body proximate the first seat and in series with the first seat and the second seat, wherein said energizing ring defines a central passageway and a slot;

a valve seat bias mounted in the valve body proximate said energizing ring and in series with said energizing ring; and

further comprising a tab protruding beyond an upper end of the energizing ring.

2. The apparatus according to claim 1 , further comprising:

a washer mounted in the valve body proximate the valve seat bias and in series with the valve seat bias; and

a second valve seat bias mounted in the valve body proximate the washer and in series with the washer.

3. The apparatus according to claim 2 , further comprising:

a seat insert mounted proximate the second seat; and

a spacer mounted proximate said second valve seat bias.

4. The apparatus according to claim 1 , wherein said energizing ring is interposed between the first seat and the valve seat bias.

5. The apparatus according to claim 1 , wherein the slot is a through-hole.

6. The apparatus according to claim 1 , wherein said energizing ring further comprises a wedge surface.

7. The apparatus according to claim 1 , further comprising a second valve seat bias mounted in the valve body wherein an end of the second valve seat bias abuts in opposition an end of the other valve seat bias.

8. The apparatus according to claim 1 , further comprising a second valve seat bias mounted in the valve body wherein the second valve seat bias is stacked on top of the other valve seat bias.

9. The apparatus according to claim 1 , wherein the valve body has a secondary access passage configured for removal of at least the ball, and wherein the secondary access passage is optionally closed by a valve access bonnet.

10. The apparatus according to claim 9 , wherein the secondary access passage is defined through a bottom of the valve body.

11. The apparatus according to claim 9 , wherein the secondary access passage is defined through a lateral side of the valve body such that the secondary access passage is configured transverse to the axis of the stem.

12. The apparatus according to claim 1 further comprising an energizing ring removal tool, wherein said energizing ring removal tool includes a handle and a hooked and tapered end.

13. The apparatus according to claim 1 , wherein the slot is a hole formed by at least two intersecting passageways.

14. The apparatus according to claim 1 , wherein the slot includes a concave interior surface configured for hooking the energizing ring.

15. The apparatus according to claim 1 , further comprising:

a second valve seat bias mounted in the valve body proximate the valve seat bias;

wherein said energizing ring is interposed between the first seat and the valve seat bias;

and

wherein said energizing ring further comprises a wedge surface.

16. A method for in-line repairing a metal seated floating ball valve, comprising the steps of:

opening an access way into a valve body of the metal seated floating ball valve;

removing an energizing ring from the valve body;

removing a ball mounted in the valve body;

replacing the ball into the valve body; and

replacing the energizing ring by wedging the energizing ring in-between a first valve seat and a valve seat bias mounted in the valve body.

Assignments (2)
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Apr 29, 2019
From: BRAY INTERNATIONAL, INC.
To: BANK OF AMERICA, N.A., AS SECURED PARTY
Reel/Frame 049018/0791 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 12, 2012
From: NGUYEN, VINH VAN; ALLEN, STANLEY C.
To: BRAY INTERNATIONAL, INC.
Reel/Frame 028360/0835 →
Continuity (2)
Provisional Application 61494466 · Jun 8, 2011
Related Publication 20120313026A1 · Dec 13, 2012