GB493760A - Improvements in self-closing valves - Google Patents

Improvements in self-closing valves

Info

Publication number
GB493760A
GB493760A GB435137A GB435137A GB493760A GB 493760 A GB493760 A GB 493760A GB 435137 A GB435137 A GB 435137A GB 435137 A GB435137 A GB 435137A GB 493760 A GB493760 A GB 493760A
Authority
GB
United Kingdom
Prior art keywords
valve
float
piston
actuated
main
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
GB435137A
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.)
DONALD WALTER PARKIN
Guest & Chrimes Ltd
Original Assignee
DONALD WALTER PARKIN
Guest & Chrimes Ltd
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 DONALD WALTER PARKIN, Guest & Chrimes Ltd filed Critical DONALD WALTER PARKIN
Priority to GB435137A priority Critical patent/GB493760A/en
Publication of GB493760A publication Critical patent/GB493760A/en
Expired legal-status Critical Current

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)
  • Float Valves (AREA)

Abstract

493,760. Self-closing valves. GUEST & CHRIMES, Ltd., and PARKIN, D. W. Feb. 13, 1937, No. 4351. [Class 135] A valve device adapted to close automatically in the event of the flow becoming abnormal comprises a sluice valve with parallel or wedge shaped doors, a stream-lined valve or a butterfly valve actuated by conduit pressure acting on a double-acting piston under the control of a pair of relay valves in turn controlled by a simple lift valve actuated by a float. The Boat 3 works in one branch of a mercury U-tube connected by pipes 20, 21 with the throat and full bore sections of a Venturi pipe in the main conduit. The opening side of the main piston is supplied with full bore pressure through a restricted orifice, said pressure being exhausted through a piston actuated relay valve 16. The connections between the valve closing side of the main piston and the main conduit or drain are controlled by a piston actuated shuttle-lift valve 15. The float 3 is coupled by an arm 7 with a shaft 9 carrying a second arm with an adjustable tappet adapted to engage a, bell-crank lever 12 linked to the control valve 13. When the flow becomes excessive the level in the branch of the U-tube containing the float falls causing the float to open the valve 13. This relieves the pressure on the actuating pistons of the two relay valves which move to connect the valve opening side of the main piston to atmosphere while connecting the valve closing side to full-bore pressure. As the float approaches its lowest position a valve 5 on the float spindle closes the connection between the pipe 21 and the U-tube while a valve 18 linked to the arm 7 vents the float chamber. The valve 18 may be replaced by a piston actuated valve. The main valve is reopened by manipulating the control valves by hand. Where the flow of fluid is controlled during resetting by a manually or mechanically operated valve at the downstream side of the hydraulically operated valve the valve 16 may be omitted..
GB435137A 1937-02-13 1937-02-13 Improvements in self-closing valves Expired GB493760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB435137A GB493760A (en) 1937-02-13 1937-02-13 Improvements in self-closing valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB435137A GB493760A (en) 1937-02-13 1937-02-13 Improvements in self-closing valves

Publications (1)

Publication Number Publication Date
GB493760A true GB493760A (en) 1938-10-13

Family

ID=9775532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB435137A Expired GB493760A (en) 1937-02-13 1937-02-13 Improvements in self-closing valves

Country Status (1)

Country Link
GB (1) GB493760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629398A (en) * 1952-05-16 1953-02-24 Frederick J Sloan Automatic hydraulic safety valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629398A (en) * 1952-05-16 1953-02-24 Frederick J Sloan Automatic hydraulic safety valve

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