FR2378968A1 - Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open - Google Patents

Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open

Info

Publication number
FR2378968A1
FR2378968A1 FR7702618A FR7702618A FR2378968A1 FR 2378968 A1 FR2378968 A1 FR 2378968A1 FR 7702618 A FR7702618 A FR 7702618A FR 7702618 A FR7702618 A FR 7702618A FR 2378968 A1 FR2378968 A1 FR 2378968A1
Authority
FR
France
Prior art keywords
annular piston
valve
high pressure
downstream pressure
pneumatic system
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.)
Granted
Application number
FR7702618A
Other languages
French (fr)
Other versions
FR2378968B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7702618A priority Critical patent/FR2378968A1/en
Publication of FR2378968A1 publication Critical patent/FR2378968A1/en
Application granted granted Critical
Publication of FR2378968B1 publication Critical patent/FR2378968B1/fr
Granted 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/1022—Fluid cut-off devices automatically actuated
    • 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

Landscapes

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

Abstract

The safety valve for high pressure hydraulic or pneumatic supply line has a cylindrical body (4) with an inlet pipe (1). The outlet fitting (10) is retained in the body by a spring ring (36) and supports an annular piston (28). The valve head (37) is fixed to the boss (33) which is attached by radial ribs to the piston (28). The annular piston is exposed to the downstream pressure through the orifice (40) so that when the downstream pressure fails, the upstream pressure overcomes the force of the spring (26) and pushes the valve head (37) onto the seat (21). A small groove (39) in the valve head permits a small leak to allow the valve to re-open when the cause of the failure is rectified.
FR7702618A 1977-01-31 1977-01-31 Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open Granted FR2378968A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7702618A FR2378968A1 (en) 1977-01-31 1977-01-31 Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7702618A FR2378968A1 (en) 1977-01-31 1977-01-31 Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open

Publications (2)

Publication Number Publication Date
FR2378968A1 true FR2378968A1 (en) 1978-08-25
FR2378968B1 FR2378968B1 (en) 1979-05-11

Family

ID=9186084

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7702618A Granted FR2378968A1 (en) 1977-01-31 1977-01-31 Safety valve for high pressure hydraulic or pneumatic system - has annular piston acted on by downstream pressure which opposes spring to hold valve open

Country Status (1)

Country Link
FR (1) FR2378968A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341245A (en) * 1979-04-06 1982-07-27 Kabushiki Kaisha Neriki Gas inlet attachment for a gas charger
ES2440084R1 (en) * 2009-12-07 2014-03-21 Lyonnaise Des Eaux France Device for connection to a water distribution network and installation and use procedure
CN105972278A (en) * 2015-03-10 2016-09-28 Ovd进口信誉有限公司 Pressure regulating valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE288716C (en) *
FR1405240A (en) * 1964-03-27 1965-07-09 Utilisation Ration Gaz Improvements to flow restrictors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE288716C (en) *
FR1405240A (en) * 1964-03-27 1965-07-09 Utilisation Ration Gaz Improvements to flow restrictors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341245A (en) * 1979-04-06 1982-07-27 Kabushiki Kaisha Neriki Gas inlet attachment for a gas charger
ES2440084R1 (en) * 2009-12-07 2014-03-21 Lyonnaise Des Eaux France Device for connection to a water distribution network and installation and use procedure
CN105972278A (en) * 2015-03-10 2016-09-28 Ovd进口信誉有限公司 Pressure regulating valve

Also Published As

Publication number Publication date
FR2378968B1 (en) 1979-05-11

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Legal Events

Date Code Title Description
ST Notification of lapse
TP Transmission of property