GB1252921A - - Google Patents

Info

Publication number
GB1252921A
GB1252921A GB1252921DA GB1252921A GB 1252921 A GB1252921 A GB 1252921A GB 1252921D A GB1252921D A GB 1252921DA GB 1252921 A GB1252921 A GB 1252921A
Authority
GB
United Kingdom
Prior art keywords
seal
ball
jan
seals
contact
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.)
Expired
Application number
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 filed Critical
Publication of GB1252921A publication Critical patent/GB1252921A/en
Expired 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

1,252,921. Valves. HATTERSLEY NEWMAN HENDER Ltd. 9 Jan., 1969 [27 Jan., 1968], No. 4368/68. Heading F2V. Under low pressures, rotary ball valve member 13 contacts radially inner convex regions 19 of resilient seals 15. As the pressure increases, the ball, when closed, migrates towards the downstream seal and distorts the latter to obtain additional contact on surface 22 of that seal. The fluid has access via holes 21 to annular recesses 18a in the seals and acts on the upstream seal to distort surface 22 of that seal into contact with the ball.
GB1252921D 1968-01-27 1968-01-27 Expired GB1252921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB436868 1968-01-27

Publications (1)

Publication Number Publication Date
GB1252921A true GB1252921A (en) 1971-11-10

Family

ID=9775859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252921D Expired GB1252921A (en) 1968-01-27 1968-01-27

Country Status (1)

Country Link
GB (1) GB1252921A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911407A (en) * 1989-03-17 1990-03-27 Paul Jr Herman L Valve seat structure and assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911407A (en) * 1989-03-17 1990-03-27 Paul Jr Herman L Valve seat structure and assembly

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee