GB1275975A - Improved pressure reducing valve and/or relief valve - Google Patents

Improved pressure reducing valve and/or relief valve

Info

Publication number
GB1275975A
GB1275975A GB3907269A GB3907269A GB1275975A GB 1275975 A GB1275975 A GB 1275975A GB 3907269 A GB3907269 A GB 3907269A GB 3907269 A GB3907269 A GB 3907269A GB 1275975 A GB1275975 A GB 1275975A
Authority
GB
United Kingdom
Prior art keywords
pressure
aug
secured
closure member
valve
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
GB3907269A
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.)
RELF RESEARCH Ltd
Original Assignee
RELF RESEARCH 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 RELF RESEARCH Ltd filed Critical RELF RESEARCH Ltd
Publication of GB1275975A publication Critical patent/GB1275975A/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
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0663—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using a spring-loaded membrane with a spring-loaded slideable obturator
    • 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
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

1275975 Valves RELF RESEARCH Ltd 5 Aug 1969 [6 Aug 1968 22 Oct 1968] 39072/69 Heading F2V The closure member of a pressure regulating valve is controlled by a flexible tubular pressure sensitive member which elongates or contracts linearly as it changes to or from an ellipsoidal form in response to pressure changes. Closure member 4 (Fig. 1) is moved towards nozzle 3 by inflation of flexible sleeve 8 against the action of spring 7 by upstream pressure communicated through slots 5b which guide a throttling member 5 acted upon by sliding member 6 secured to the free end of sleeve 8. In a modification (Fig. 2) closure member 20 is moved by a member 23 secured to the free end of ellipsoidal member 21 which is deflated by the upstream pressure in chamber 16, against the action of spring 22. In further modification (not shown) the tubular member can be of triangular or trapezoidal cross-section and can be pressurized by external means under manual control.
GB3907269A 1968-08-06 1969-08-05 Improved pressure reducing valve and/or relief valve Expired GB1275975A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ15340268 1968-08-06
NZ15421068 1968-10-22

Publications (1)

Publication Number Publication Date
GB1275975A true GB1275975A (en) 1972-06-01

Family

ID=26649440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3907269A Expired GB1275975A (en) 1968-08-06 1969-08-05 Improved pressure reducing valve and/or relief valve

Country Status (1)

Country Link
GB (1) GB1275975A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees