GB1400036A - Improvements in or relating to valves - Google Patents

Improvements in or relating to valves

Info

Publication number
GB1400036A
GB1400036A GB4885872A GB4885872A GB1400036A GB 1400036 A GB1400036 A GB 1400036A GB 4885872 A GB4885872 A GB 4885872A GB 4885872 A GB4885872 A GB 4885872A GB 1400036 A GB1400036 A GB 1400036A
Authority
GB
United Kingdom
Prior art keywords
piston
chambers
upstream pressure
spool
oct
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
GB4885872A
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.)
SAP SE
Original Assignee
SAP SE
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 SAP SE filed Critical SAP SE
Publication of GB1400036A publication Critical patent/GB1400036A/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
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)
  • Safety Valves (AREA)

Abstract

1400036 Fluid-pressure servomotor systems SAPAG 24 Oct 1972 [29 Oct 1971] 48858/72 Heading G3P A pilot system which actuates a relief valve 8 upon increase of upstream pressure comprises a piston 30 adjustably loaded by a spring 24 and carrying a closure member 35 (normally open) at one end for controlling the admission of upstream pressure to the valve 8 and a closure member 31 (normally closed) at the other end for controlling the exhaust, which piston is provided with a bore 52 to connect the chambers 44, 45 at either end of the piston and with a spool 51, the opposite sides of which are in communication with the respective chambers 44 45 via grooves 54, 53, to control the connection between said chambers. The spool achieves a constant throttle during the lift period of the piston and thereafter, a complete opening of the bore to allow a rapid exhaust to allow the relief valve to open under the action of upstream pressure.
GB4885872A 1971-10-29 1972-10-24 Improvements in or relating to valves Expired GB1400036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7139153A FR2158742A6 (en) 1971-10-29 1971-10-29

Publications (1)

Publication Number Publication Date
GB1400036A true GB1400036A (en) 1975-07-16

Family

ID=9085157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4885872A Expired GB1400036A (en) 1971-10-29 1972-10-24 Improvements in or relating to valves

Country Status (5)

Country Link
US (1) US3771553A (en)
DE (1) DE2252129A1 (en)
FR (1) FR2158742A6 (en)
GB (1) GB1400036A (en)
IT (1) IT975388B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410005A (en) * 1981-02-13 1983-10-18 Vapor Corporation Pilot operated relief valve
US4462420A (en) * 1982-06-14 1984-07-31 Teledyne Farris Engineering Safety pressure relief valve
US4881571A (en) * 1983-09-22 1989-11-21 Dresser Industries, Inc. Modulating pressure operated pilot relief valve
US4722361A (en) * 1983-09-22 1988-02-02 Vapor Corporation Modulating pressure operated pilot relief valve
US4586533A (en) * 1985-07-01 1986-05-06 Crosby Valve & Gage Company Non-flowing modulating pilot operated relief valve
US4609008A (en) * 1985-09-11 1986-09-02 Anderson-Greenwood Usa, Inc. Non-flowing pressure responsive pilot valve
FR2591706B1 (en) * 1985-12-16 1988-07-22 Commissariat Energie Atomique SAFETY VALVE WITH INTEGRATED PILOTAGE
AU704837B2 (en) * 1995-06-10 1999-05-06 Rudolf Bichsel Method and device for puffing foodstuffs
US6161571A (en) * 1999-05-14 2000-12-19 The Living Trust of Eleanor A. Taylor Modulating relief valve
US11306838B2 (en) * 2020-03-27 2022-04-19 Dresser, Llc Pilot-operated pressure relief valve nozzle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649115A (en) * 1948-01-26 1953-08-18 Bendix Aviat Corp Pressure-responsive mechanism
US2619109A (en) * 1950-05-29 1952-11-25 Garrett Oil Tools Inc Relief valve

Also Published As

Publication number Publication date
FR2158742A6 (en) 1973-06-15
US3771553A (en) 1973-11-13
DE2252129A1 (en) 1973-05-03
IT975388B (en) 1974-07-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee