GB291520A - Improvements in, and relating to, valves - Google Patents
Improvements in, and relating to, valvesInfo
- Publication number
- GB291520A GB291520A GB6009/26A GB600926A GB291520A GB 291520 A GB291520 A GB 291520A GB 6009/26 A GB6009/26 A GB 6009/26A GB 600926 A GB600926 A GB 600926A GB 291520 A GB291520 A GB 291520A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- main
- cylinder
- main valve
- valves
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/166—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using pistons within the main valve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
291,520. Mason, H. L. Jan. 3, 1927. Safety Valves ; pressure - reducing valves; seats.-In a safety or reducing valve for steam &c. of the kind in which a main valve is controlled by a doubleheaded pilot valve the seat 10<1> of the main valve 10 is introduced and held in a direction opposed to that of the closure of the valve. The pilot valve has two heads 37 and is loaded by a spring 47. Normally the lower valve 37 is open and steam is admitted by a pipe 48 to a cylinder 15, acting upon a piston 16 to keep the main valve 10 closed, but excessive pressure closes the lower valve 37 and opens the upper one, so that the cylinder 15 is exhausted and the main valve 10 opens. In a modification, the cylinder 15 is separated from the main casing by a diaphragm, both sides of the piston 16 being controlled by the pilot valve. The main valve may be provided with packing as described in Specification 270,771.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6009/26A GB291520A (en) | 1927-01-03 | 1927-01-03 | Improvements in, and relating to, valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6009/26A GB291520A (en) | 1927-01-03 | 1927-01-03 | Improvements in, and relating to, valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB291520A true GB291520A (en) | 1928-06-05 |
Family
ID=9806751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6009/26A Expired GB291520A (en) | 1927-01-03 | 1927-01-03 | Improvements in, and relating to, valves |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB291520A (en) |
-
1927
- 1927-01-03 GB GB6009/26A patent/GB291520A/en not_active Expired
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