GB267978A - Safety valve - Google Patents
Safety valveInfo
- Publication number
- GB267978A GB267978A GB7747/27A GB774727A GB267978A GB 267978 A GB267978 A GB 267978A GB 7747/27 A GB7747/27 A GB 7747/27A GB 774727 A GB774727 A GB 774727A GB 267978 A GB267978 A GB 267978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- chamber
- piston
- ports
- atmosphere
- 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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
267,978. Soc. Anon. des Forges et Chantiers de la MediterranÚe. March 20, 1926, [Convention date]. Safety valves. - A safety valve of the kind controlled by an auxiliary valve has the auxiliary valve provided with a piston subject to the pressure in a chamber having a restricted outlet to atmosphere and with a second piston subject to the inlet pressure and adapted to interrupt the supply of fluid pressure to the main actuating chamber. The main valve 4 which is adjustably loaded by a spring 10 co-operates with a seat 5<a> and is coupled to a piston 6 working in a chamber 7. The seat 13 for the auxiliary valve is held in position by the housing 17 for loading spring 22 and has ports 19 leading to the chamber 7 and ports 18 leading to a chamber 15 connected by a passage 16 with the inlet. In the event of excessive pressure arising the auxiliary valve is lifted against the action of the spring to cause the piston 20 to close the ports 18 and to open the valve 14 to connect the chamber 7 to atmosphere and so allow the inlet pressure beneath the piston to open the main valve. The valve 14 is fitted with a piston 26 of larger nrea open to atmosphere on its upper face and is arranged in a chamber 27 having a restricted communication with atmosphere through a port 25 to ensure a full lift of the auxiliary valve and consequential closing of the ports 18. The piston 20 is of larger area than the valve so that the valve is maintained in its raised position until the pressure has fallen below that at which the valve lifted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE267978X | 1926-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB267978A true GB267978A (en) | 1927-06-23 |
Family
ID=5997673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7747/27A Expired GB267978A (en) | 1926-03-20 | 1927-03-21 | Safety valve |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB267978A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2447820A (en) * | 1943-09-03 | 1948-08-24 | Bendix Aviat Corp | Regulating valve |
US2477247A (en) * | 1943-07-08 | 1949-07-26 | Borg Warner | Relief valve |
US2545712A (en) * | 1944-06-27 | 1951-03-20 | Merit Engineering Inc | Unloading valve |
US2580128A (en) * | 1947-03-28 | 1951-12-25 | Denison Eng Co | Pilot unit for relief valves |
US3294111A (en) * | 1965-06-01 | 1966-12-27 | Us Industries Inc | Relief valve |
US3304951A (en) * | 1965-08-30 | 1967-02-21 | Victor W Farris | Safety valves |
GB2202612A (en) * | 1987-03-23 | 1988-09-28 | Dresser Ind | Safety relief valve |
-
1927
- 1927-03-21 GB GB7747/27A patent/GB267978A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2477247A (en) * | 1943-07-08 | 1949-07-26 | Borg Warner | Relief valve |
US2447820A (en) * | 1943-09-03 | 1948-08-24 | Bendix Aviat Corp | Regulating valve |
US2545712A (en) * | 1944-06-27 | 1951-03-20 | Merit Engineering Inc | Unloading valve |
US2580128A (en) * | 1947-03-28 | 1951-12-25 | Denison Eng Co | Pilot unit for relief valves |
US3294111A (en) * | 1965-06-01 | 1966-12-27 | Us Industries Inc | Relief valve |
US3304951A (en) * | 1965-08-30 | 1967-02-21 | Victor W Farris | Safety valves |
GB2202612A (en) * | 1987-03-23 | 1988-09-28 | Dresser Ind | Safety relief valve |
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