GB291520A - Improvements in, and relating to, valves - Google Patents

Improvements in, and relating to, valves

Info

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
Application number
GB6009/26A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB6009/26A priority Critical patent/GB291520A/en
Publication of GB291520A publication Critical patent/GB291520A/en
Expired legal-status Critical Current

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.
GB6009/26A 1927-01-03 1927-01-03 Improvements in, and relating to, valves Expired GB291520A (en)

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)

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