GB376991A - Improvements in safety valves - Google Patents
Improvements in safety valvesInfo
- Publication number
- GB376991A GB376991A GB23761/31A GB2376131A GB376991A GB 376991 A GB376991 A GB 376991A GB 23761/31 A GB23761/31 A GB 23761/31A GB 2376131 A GB2376131 A GB 2376131A GB 376991 A GB376991 A GB 376991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cover
- orifice
- spindle
- 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.)
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
376,991. Safety valves. CONSOLIDATED ASHCROFT HANCOCK CO., Elias Street, Bridgeport, Connecticut, U.S.A. -(Assignees of Eplett, A. D. ; Elias Street, Bridgeport, Connecticut, U.S.A.). Aug. 24, 1931, No. 23761. Convention date, March 19. [Class 135.] A safety valve has a valve member with a tubular extension which forms part of a back pressure chamber, an orifice in the cover of which is provided with closing means which operate as the valve returns to its seat. A seating surface 4 is provided on a bushing 5 screwed into the inlet 2. The tubular extension 13a of the valve member 13 is guided in a cylindrical sleeve 8, integral ring projections 8a, 8b on which bear against an annular portion 1a of the casing 1. A spindle 12 which rests at its lower end in a cavity in the valve members 13, to which the movement of the spindle is transmitted by a pin 15, passes with some clearance through a nut 14 screwed into the cover of the portion 13a and thence through an orifice 11 in a loose annulus 10a confined by a screw-threaded ring 10b in a recess in the integral cover 10 of the guiding sleeve 8. A blow-down ring 23 screwed to the bushing 5 has a conical inside surface 24 which forms with a corresponding surface 25 on the portion 13a, one part of a huddling chamber 22, the other part of which is formed by the overhang 21 of the valve member 13, and the top of the bushing 5. A passage (or passages) 26 leads from the huddling chamber 22 to a back pressure chamber comprising the interior of the extension 13a and an upper chamber 9 between the cover 10 and the cover of the extension 13a. In the closed position of the valve, a cylindrical enlargement 28 on the spindle 12 closes the orifice 11 but in the full open position, a shoulder 27 on said enlargement occupies the orifice 11 and pressure fluid can escape through the passage then available, said passage being constricted and pressure built up in the back pressure chamber when the valve commences to return to its seat. The lower abutment 18 of a spring 19 engages a shoulder 16 on the spindle 12. The upper abutment 20 is adjusted by an externally threaded sleeve 20a held in the yoke 7.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US376991XA | 1931-03-19 | 1931-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB376991A true GB376991A (en) | 1932-07-21 |
Family
ID=21895797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23761/31A Expired GB376991A (en) | 1931-03-19 | 1931-08-24 | Improvements in safety valves |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB376991A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114263771A (en) * | 2021-12-08 | 2022-04-01 | 北京航天石化技术装备工程有限公司 | Back pressure cavity for high-performance steam safety valve |
CN116658674A (en) * | 2023-08-01 | 2023-08-29 | 博莱阀门(常州)有限公司 | Automatic control valve based on data analysis and automatic control method thereof |
CN117345888A (en) * | 2023-12-04 | 2024-01-05 | 福建云联中汇环保科技有限公司 | Sewage air valve capable of preventing leakage of sewage |
-
1931
- 1931-08-24 GB GB23761/31A patent/GB376991A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114263771A (en) * | 2021-12-08 | 2022-04-01 | 北京航天石化技术装备工程有限公司 | Back pressure cavity for high-performance steam safety valve |
CN116658674A (en) * | 2023-08-01 | 2023-08-29 | 博莱阀门(常州)有限公司 | Automatic control valve based on data analysis and automatic control method thereof |
CN117345888A (en) * | 2023-12-04 | 2024-01-05 | 福建云联中汇环保科技有限公司 | Sewage air valve capable of preventing leakage of sewage |
CN117345888B (en) * | 2023-12-04 | 2024-04-12 | 福建云联中汇环保科技有限公司 | Sewage air valve capable of preventing leakage of sewage |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2333522A (en) | Relief valve | |
US2630137A (en) | Self-closing and slow-closing valve | |
US3516434A (en) | Lock type excess flow valve | |
GB706674A (en) | Improvements in or relating to excess flow valves | |
US2336282A (en) | Valve | |
GB376991A (en) | Improvements in safety valves | |
US2351512A (en) | Nonchattering relief valve | |
US2955612A (en) | Pressure actuated valve | |
US2568982A (en) | Mechanically operated check valve | |
US2229893A (en) | Gas safety valve | |
US2613688A (en) | Valve | |
US1405192A (en) | Shut-off and safety valve | |
GB431448A (en) | Improvements in or relating to self closing valves | |
US2293325A (en) | Safety gas valve | |
GB201268A (en) | Improvements in taps or valves for controlling the flow of spirits and the like | |
GB362110A (en) | ||
GB548801A (en) | An improvement in or relating to safety valves | |
GB314333A (en) | Improvements relating to superheaters | |
GB506346A (en) | Improvements in and relating to valve devices for use with float operated cocks | |
GB107225A (en) | Improvements relating to Valves and Taps. | |
GB191025535A (en) | Improvements in Safety Valves. | |
GB520324A (en) | An improved air or gas pressure regulating or reducing valve | |
GB813082A (en) | Pedal-actuated water tap | |
GB552621A (en) | Improvements in or relating to valves for controlling the flow of fluids | |
GB502218A (en) | Improvements in or relating to high-lift safety valves for steam boilers |