GB2413374A - An isolation valve assembly - Google Patents

An isolation valve assembly Download PDF

Info

Publication number
GB2413374A
GB2413374A GB0516095A GB0516095A GB2413374A GB 2413374 A GB2413374 A GB 2413374A GB 0516095 A GB0516095 A GB 0516095A GB 0516095 A GB0516095 A GB 0516095A GB 2413374 A GB2413374 A GB 2413374A
Authority
GB
United Kingdom
Prior art keywords
valve
ball
seat
contact
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0516095A
Other versions
GB0516095D0 (en
Inventor
Craig Antony Furnival
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oliver Twinsafe Valves Ltd
Original Assignee
Oliver Twinsafe Valves Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oliver Twinsafe Valves Ltd filed Critical Oliver Twinsafe Valves Ltd
Publication of GB0516095D0 publication Critical patent/GB0516095D0/en
Publication of GB2413374A publication Critical patent/GB2413374A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/205—Sealing effected by the flowing medium

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

An isolation valve assembly for use in a pipeline comprises a valve housing body (1) with a passageway extending therethough. A valve chamber (3) in said passageway receives a rotary valve ball (2) and a pair of valve seats (6, 7) disposed on opposite sides of the ball (2). Each seat (6, 7) has a first side proximal the ball valve (2) that defines a sealing surface in contact with an outer surface of said valve ball (2) as well as a second sealing surface in contact with the body. A passage (18) extending from the valve chamber (3) redirects fluid pressure in said chamber towards the side of the seat that is furthest from the valve ball (2) so that the fluid pressure can be used to force the seal into contact with the valve ball. The arrangement ensures that if the upstream seat seal fails the fluid that leaks into the valve chamber (3) is used to increase the sealing force applied between the downstream seat seal and the valve ball (2).

Description

GB 2413374 A continuation (74) Agent and/or Address for Service: Marks &
Clerk Sussex House, 83-85 Mosley Street, MANCHESTER, M2 3LG, United Kingdom
GB0516095A 2003-03-25 2004-03-03 An isolation valve assembly Withdrawn GB2413374A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0306744A GB0306744D0 (en) 2003-03-25 2003-03-25 An isolation valve assembly
PCT/GB2004/000869 WO2004085892A1 (en) 2003-03-25 2004-03-03 An isolation valve assembly

Publications (2)

Publication Number Publication Date
GB0516095D0 GB0516095D0 (en) 2005-09-14
GB2413374A true GB2413374A (en) 2005-10-26

Family

ID=9955423

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0306744A Ceased GB0306744D0 (en) 2003-03-25 2003-03-25 An isolation valve assembly
GB0516095A Withdrawn GB2413374A (en) 2003-03-25 2004-03-03 An isolation valve assembly

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0306744A Ceased GB0306744D0 (en) 2003-03-25 2003-03-25 An isolation valve assembly

Country Status (2)

Country Link
GB (2) GB0306744D0 (en)
WO (1) WO2004085892A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105626892A (en) * 2016-03-28 2016-06-01 福建上润精密仪器有限公司 Valve seat structure of floating ball valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093157B (en) * 1958-08-11 1960-11-17 Neue Argus Gmbh Stopcock with ball plug and a piston sealing ring mounted on one side in a groove in the stopcock housing
DE2238266A1 (en) * 1971-12-15 1973-07-05 Acf Ind Inc BALL VALVE
US3749357A (en) * 1972-04-07 1973-07-31 Acf Ind Inc Valve structure having fluid pressure actuated seats
US5169123A (en) * 1989-04-28 1992-12-08 Vanatome, Societe Anonyme Steel ball valve
US5413310A (en) * 1991-07-12 1995-05-09 Den Norske Stats Oljeselskap A.S Valve arrangement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093157B (en) * 1958-08-11 1960-11-17 Neue Argus Gmbh Stopcock with ball plug and a piston sealing ring mounted on one side in a groove in the stopcock housing
DE2238266A1 (en) * 1971-12-15 1973-07-05 Acf Ind Inc BALL VALVE
US3749357A (en) * 1972-04-07 1973-07-31 Acf Ind Inc Valve structure having fluid pressure actuated seats
US5169123A (en) * 1989-04-28 1992-12-08 Vanatome, Societe Anonyme Steel ball valve
US5413310A (en) * 1991-07-12 1995-05-09 Den Norske Stats Oljeselskap A.S Valve arrangement

Also Published As

Publication number Publication date
WO2004085892A1 (en) 2004-10-07
GB0516095D0 (en) 2005-09-14
GB0306744D0 (en) 2003-04-30

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)