GB798475A - Improvements in or relating to stop valve installations - Google Patents
Improvements in or relating to stop valve installationsInfo
- Publication number
- GB798475A GB798475A GB857355A GB857355A GB798475A GB 798475 A GB798475 A GB 798475A GB 857355 A GB857355 A GB 857355A GB 857355 A GB857355 A GB 857355A GB 798475 A GB798475 A GB 798475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- stop
- cylinder
- servo
- power
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
798,475. Fluid-pressure servomotors. COCKBURNS, Ltd. Feb. 17, 1956 [March 24, 1955], No. 8573/55. Class 135. In a stop-valve installation in which the stop valve 10 may be closed by power, e.g. in an emergency by means of a valveclosing servo-cylinder 10a and in which a clutch device 13 for the valve spindle nut 23 is provided to permit the nut to be freed for power closing of the valve, the stop valve may be re-opened by power by means of a further servo-cylinder 15 to which pressure fluid is admitted from a change-over valve 20 when its control member 22 is moved from a " normal position " to " valve-opening " position. This movement of the control member diverts pressure fluid in a conduit 19 connected to the stop-valve inlet 11 from control valves 16, 17, effective on the occurrence of engine overspeed or low vacuum in the condenser to close the stop-valve, to a conduit 21 leading to the servo-cylinder 15. The clutch device 13 is operated by a control cylinder 18 which is also effective to exhaust the space below the valve closing servo-piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB857355A GB798475A (en) | 1955-03-24 | 1955-03-24 | Improvements in or relating to stop valve installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB857355A GB798475A (en) | 1955-03-24 | 1955-03-24 | Improvements in or relating to stop valve installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB798475A true GB798475A (en) | 1958-07-23 |
Family
ID=9855077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB857355A Expired GB798475A (en) | 1955-03-24 | 1955-03-24 | Improvements in or relating to stop valve installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB798475A (en) |
-
1955
- 1955-03-24 GB GB857355A patent/GB798475A/en not_active Expired
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