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
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.
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)
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 |
-
1968
- 1968-01-27 GB GB1252921D patent/GB1252921A/en not_active Expired
Cited By (1)
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 |