GB622556A - Improvements in or relating to pressure reducing valves - Google Patents

Improvements in or relating to pressure reducing valves

Info

Publication number
GB622556A
GB622556A GB819647A GB819647A GB622556A GB 622556 A GB622556 A GB 622556A GB 819647 A GB819647 A GB 819647A GB 819647 A GB819647 A GB 819647A GB 622556 A GB622556 A GB 622556A
Authority
GB
United Kingdom
Prior art keywords
valve
piston
pressure
inlet
outlet
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
GB819647A
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB819647A priority Critical patent/GB622556A/en
Publication of GB622556A publication Critical patent/GB622556A/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
    • 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

Abstract

622,556. Fluid - actuated valves. BRITISH OXYGEN CO., Ltd., and GODFREY, R. C. March 26, 1947, No. 8196. [Class 135] [Also in Group XXVI] A pressure-reducing valve of the type comprising a main valve 6 controlling the flow of fluid from an inlet 11 to an outlet 13 and balanced with respect to both inlet and outlet pressures, a pressure-responsive valve-actuating member, such as a piston 8, connected to the low pressure side of the valve and exposed on one side through a passage 58 to the outlet pressure which tends to move it in a direction to close the main valve and exposed on its other side to the pressure in a regulating chamber 9, a pilot valve 10 controlling a passage 27, 31 leading from the inlet 11 to the chamber 9, and a second pressure-responsive valve-actuating member, such as the diaphragm 35, connected to the low pressure side of the pilot valve and exposed on one side to the same pressure as that in the regulating chamber which tends to move it in a direction to close the pilot valve and acted upon on its other side by a static loading, such as the adjustable spring 44, is characterized in that the pilot valve is balanced with respect to the fluid pressures of the inlet and of the regulating chamber. For balancing purposes, valve 6 carries a piston 14 of which the diameter is equal to that of the seat of the valve ; the inlet fluid pressure acts in opposite directions against the inlet side of the valve closure member and the inside face of piston 14, and the outlet pressure acts in opposite directions against the outlet face of the valve closure member and, through a passage 20 and a chamber containing the valve loading spring 18, against the outer face of piston 14. Pilot 'valve 10 is balanced in a similar manner by a piston 32. The spindle 21 connecting valve 6 to piston 8 is coned to prevent the jet of pressure fluid flowing through the valve from impinging and exerting a pressure on the piston, and a yielding washer 57 is provided for the same purpose. A small leak is pro. vided between the two sides of piston 8. To prevent hunting, the piston is fitted with rubber rings 50 acting as friction brakes, but to prevent undue damping due to air entrapped between the rings during the initial insertion of the piston, ports 51 are provided to allow this air to leak away. Pistons 8, 14 and 32 could be substituted by diaphragms or bellows.
GB819647A 1947-03-26 1947-03-26 Improvements in or relating to pressure reducing valves Expired GB622556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB819647A GB622556A (en) 1947-03-26 1947-03-26 Improvements in or relating to pressure reducing valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB819647A GB622556A (en) 1947-03-26 1947-03-26 Improvements in or relating to pressure reducing valves

Publications (1)

Publication Number Publication Date
GB622556A true GB622556A (en) 1949-05-04

Family

ID=9847697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB819647A Expired GB622556A (en) 1947-03-26 1947-03-26 Improvements in or relating to pressure reducing valves

Country Status (1)

Country Link
GB (1) GB622556A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090478B (en) * 1953-06-08 1960-10-06 Delbert Grant Faust Pressure regulator with a spring-loaded control pressure regulator located in a secondary line
US3292732A (en) * 1964-03-30 1966-12-20 Ingersoll Rand Co Pressure fluid control and unloader therefor
FR2574896A1 (en) * 1984-12-14 1986-06-20 Tlv Co Ltd REGULATOR VALVE
FR2589549A1 (en) * 1985-10-30 1987-05-07 Tlv Co Ltd REDUCING VALVE
CN107246490A (en) * 2017-06-07 2017-10-13 刘晓禹 Balance type pressure reducing valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090478B (en) * 1953-06-08 1960-10-06 Delbert Grant Faust Pressure regulator with a spring-loaded control pressure regulator located in a secondary line
US3292732A (en) * 1964-03-30 1966-12-20 Ingersoll Rand Co Pressure fluid control and unloader therefor
FR2574896A1 (en) * 1984-12-14 1986-06-20 Tlv Co Ltd REGULATOR VALVE
NL8503446A (en) * 1984-12-14 1986-07-01 Tlv Co Ltd STEERING VALVE.
FR2589549A1 (en) * 1985-10-30 1987-05-07 Tlv Co Ltd REDUCING VALVE
NL8602734A (en) * 1985-10-30 1987-05-18 Tlv Co Ltd REDUCING VALVE CONSTRUCTION.
CN107246490A (en) * 2017-06-07 2017-10-13 刘晓禹 Balance type pressure reducing valve

Similar Documents

Publication Publication Date Title
GB1139058A (en) Regulator with balancing piston
GB586975A (en) Improvements in or relating to valves for fluid pressure supply systems
GB746606A (en) Improvements in or relating to valves
GB975799A (en) Fluid flow control valve
GB622556A (en) Improvements in or relating to pressure reducing valves
GB1163663A (en) Improvements in or relating to Diaphragm-Type Compressors and Pumps.
GB671546A (en) Improvements in gate-type shut-off valves
GB1023879A (en) Valve and flow controller provided with said valve
GB723375A (en) Improvements in relief valves
GB709358A (en) Fluid flow and pressure control valve
ES298577A1 (en) Improvements in fluid pressure systems and fluid pressure responsive control valves
GB721528A (en) Improvements in or relating to combined pressure fluid distributor and pressure regulating valve devices
GB807267A (en) Improvements in or relating to fluid pressure valves
GB692653A (en) Improvements in or relating to pressure reducing valves
GB930795A (en) Improvements in and relating to pressure reducing valves
GB735845A (en) Improvements in or relating to fluid supply systems
GB732693A (en) Improvements in pressure reducing valves
GB1509711A (en) Valves
GB191406860A (en) Improvements in or relating to Valves Actuated by Fluid Pressure.
GB928802A (en) Improvements in and relating to fluid-pressure servomotor control systems
GB1392654A (en) Pressure regulator
GB680109A (en) Improved reducing valve mechanism
GB734832A (en) Improvements in or relating to temperature or pressure controlled valves for controlling the flow of fluids
GB769025A (en) Improvements in or relating to diaphragm assemblies
GB617624A (en) Pressure relief valves