GB940679A - Improvements in or relating to fluid control valves - Google Patents

Improvements in or relating to fluid control valves

Info

Publication number
GB940679A
GB940679A GB2923860A GB2923860A GB940679A GB 940679 A GB940679 A GB 940679A GB 2923860 A GB2923860 A GB 2923860A GB 2923860 A GB2923860 A GB 2923860A GB 940679 A GB940679 A GB 940679A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
closure
orifice
inlet
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
GB2923860A
Inventor
Edgar George
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.)
PERRETT CONTROL Co Ltd
Original Assignee
PERRETT CONTROL Co 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 PERRETT CONTROL Co Ltd filed Critical PERRETT CONTROL Co Ltd
Priority to GB2923860A priority Critical patent/GB940679A/en
Publication of GB940679A publication Critical patent/GB940679A/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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid

Abstract

940,679. Valves. PERRETT CONTROL CO. Ltd. Aug. 24, 1961 [Aug. 24, 1960], No. 29238/60. Heading F2V. Fluid flow between an inlet 2 and an outlet 3 is controlled by a lift closure 7 which is urged on to its seat by a spring 12 and inlet pressure acting on the upper surface of piston 14 secured to the hollow valve stem 9; the inlet pressure passes through the stem 9, which includes a calibrated orifice 21. The inlet pressure acts directly on the closure 7 in a direction to open it but since the exposed area of the latter is less than the area of the upper surface of the piston 14 the valve remains closed. The spring may act on the piston instead of the closure member. Upon admitting a control pressure through a port 22 to act on the underside of the piston 14 the closure 7 is unseated, the fluid above the piston being expelled into the inlet at a rate dependent upon the size of the orifice 21 which thereby determines the speed of valve actuation. The valve is reclosed by reducing the control pressure. The piston may be of the differential type. Different rates of valve opening and closing may be effected by a dual-passage orifice, one passage being closed by a ball non-return valve; alternatively a single passage orifice may be used with a ball valve which is fully opened by flow in one direction and partially closed by flow in the opposite direction. The bonnet bore through which the stem slides has a vent passage 25 intermediate a pair of seals 23.
GB2923860A 1960-08-24 1960-08-24 Improvements in or relating to fluid control valves Expired GB940679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2923860A GB940679A (en) 1960-08-24 1960-08-24 Improvements in or relating to fluid control valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2923860A GB940679A (en) 1960-08-24 1960-08-24 Improvements in or relating to fluid control valves

Publications (1)

Publication Number Publication Date
GB940679A true GB940679A (en) 1963-10-30

Family

ID=10288328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2923860A Expired GB940679A (en) 1960-08-24 1960-08-24 Improvements in or relating to fluid control valves

Country Status (1)

Country Link
GB (1) GB940679A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307574A (en) * 1964-02-07 1967-03-07 Acf Ind Inc Drain structure for venting leaked fluid from valve stem packing
US3388719A (en) * 1966-07-05 1968-06-18 Maginnis Francis Internal tank valves
US4239177A (en) * 1978-04-20 1980-12-16 Emerson Electric Co. Electrically operated valve with balanced port design
US4526341A (en) * 1983-06-15 1985-07-02 Kerotest Manufacturing Corp. Pneumatic shut-off valve
US5429304A (en) * 1992-10-16 1995-07-04 Toyota Jidosha Kabushiki Kaisha On/off valve capable of drawing back fluid when closed
US5676756A (en) * 1992-09-11 1997-10-14 Toyota Jidosha Kabushiki Kaisha Rotary atomizing electrostatic coating apparatus and a method of use thereof
FR3056670A1 (en) * 2016-09-27 2018-03-30 Vianney Rabhi TUBULAR VALVE WITH HYDRAULIC CONTROL

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307574A (en) * 1964-02-07 1967-03-07 Acf Ind Inc Drain structure for venting leaked fluid from valve stem packing
US3388719A (en) * 1966-07-05 1968-06-18 Maginnis Francis Internal tank valves
US4239177A (en) * 1978-04-20 1980-12-16 Emerson Electric Co. Electrically operated valve with balanced port design
US4526341A (en) * 1983-06-15 1985-07-02 Kerotest Manufacturing Corp. Pneumatic shut-off valve
US5676756A (en) * 1992-09-11 1997-10-14 Toyota Jidosha Kabushiki Kaisha Rotary atomizing electrostatic coating apparatus and a method of use thereof
US5429304A (en) * 1992-10-16 1995-07-04 Toyota Jidosha Kabushiki Kaisha On/off valve capable of drawing back fluid when closed
FR3056670A1 (en) * 2016-09-27 2018-03-30 Vianney Rabhi TUBULAR VALVE WITH HYDRAULIC CONTROL

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