GB1242552A - Improvements in and relating to pilot controlled pressure limiting valves - Google Patents

Improvements in and relating to pilot controlled pressure limiting valves

Info

Publication number
GB1242552A
GB1242552A GB4942768A GB4942768A GB1242552A GB 1242552 A GB1242552 A GB 1242552A GB 4942768 A GB4942768 A GB 4942768A GB 4942768 A GB4942768 A GB 4942768A GB 1242552 A GB1242552 A GB 1242552A
Authority
GB
United Kingdom
Prior art keywords
throttle
bore
inlet
fluid
pressure
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
GB4942768A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1242552A publication Critical patent/GB1242552A/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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
    • 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
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve

Landscapes

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

Abstract

1,242,552. Fluid-pressure servomotor systems. ROBERT BOSCH G.m.b.H. Oct. 18, 1968 [Oct. 19, 1967], No.49427/68. Heading G3P. A pilot-operated pressure limiting valve comprises a control member 3 controlling a connection 8 between an inlet 4 and an outlet 5 and is characterized in that a throttle 30 is formed when the member 3 abuts against the face 29 of the pilot valve housing 15. In operation, fluid from inlet 4 passes via an extension 6 to a bore 18 and further to blind bores 25, 27. A fixed throttle 23 ensures that the member 3 is pressurebalanced in the position shown. If the inlet pressure rises above the value set for the pilot valve, the closure member 39 is lifted from its seat and fluid flows to exhaust via port 47. The reduction of pressure on the upper face of member 3 causes it to rise and expose the outlet 5 to the inlet 4. If the front face 26 of member 3 reaches its limit position on the plane surface 29, a second throttle is formed between groove 30 and the surface 29. Alternatively the throttle can be formed between a groove in the surface 29 and the plane upper surface of the member 3, or the throttle effect can be attained by surface roughness of the parts 3 and 29. When bore 22 is closed and a pin 20 is removed from bore 21, an external control fluid circuit may be connected to the bore 21 to control remotely the pressure limiting valve.
GB4942768A 1967-10-19 1968-10-18 Improvements in and relating to pilot controlled pressure limiting valves Expired GB1242552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0095034 1967-10-19

Publications (1)

Publication Number Publication Date
GB1242552A true GB1242552A (en) 1971-08-11

Family

ID=6987930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4942768A Expired GB1242552A (en) 1967-10-19 1968-10-18 Improvements in and relating to pilot controlled pressure limiting valves

Country Status (3)

Country Link
DE (1) DE1650301A1 (en)
FR (1) FR1582918A (en)
GB (1) GB1242552A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1785653A1 (en) * 2005-11-09 2007-05-16 Braglia SRL Control valve
CN113864264A (en) * 2021-09-07 2021-12-31 刘颖 Pilot-operated overflow valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1785653A1 (en) * 2005-11-09 2007-05-16 Braglia SRL Control valve
CN113864264A (en) * 2021-09-07 2021-12-31 刘颖 Pilot-operated overflow valve

Also Published As

Publication number Publication date
FR1582918A (en) 1969-10-10
DE1650301A1 (en) 1970-09-10

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