GB865470A - Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel - Google Patents

Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel

Info

Publication number
GB865470A
GB865470A GB1243758A GB1243758A GB865470A GB 865470 A GB865470 A GB 865470A GB 1243758 A GB1243758 A GB 1243758A GB 1243758 A GB1243758 A GB 1243758A GB 865470 A GB865470 A GB 865470A
Authority
GB
United Kingdom
Prior art keywords
valve
spring
valve member
loaded
spreader plate
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
GB1243758A
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.)
HILL PORTER NEWCASTLE Ltd
Original Assignee
HILL PORTER NEWCASTLE 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 HILL PORTER NEWCASTLE Ltd filed Critical HILL PORTER NEWCASTLE Ltd
Priority to GB1243758A priority Critical patent/GB865470A/en
Publication of GB865470A publication Critical patent/GB865470A/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

Landscapes

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

Abstract

865,470. Valves. HILL PORTER (NEWCASTLE) Ltd., and TALBOTT, A. C. April 16, 1959 [April 18, 1958], No. 12437/58. Class 135. An hydraulic pressure-relief valve designed to avoid cavitation e.g. when used in a yielding hydraulic prop, comprises a valve body in which a spring-loaded valve member is pressed against a sharp-edged circular hole or a conical surface in a valve seating, while attached to the valve member is a flow-spreader plate having a diameter at least twice the diameter of the contact circle of the valve member with its seating or the diameter of an open hole through which the liquid passes immediately before the spreader plate and spaced above a part of the valve body to form a thin space through which the liquid passes when the valve is open into a larger space above the spreader plate which is pressurized by an outlet restriction or by the spring-loaded valve member itself to prevent cavitation in the valve. In one embodiment, Fig. 1, the spring- loaded ball valve member d is carried by a flow spreader disc g spaced above a part of the valve body a to form a thin space h, the relieved liquid from an inlet c passing the disc into a larger space i above the plate and thence out through a pressurizing leak valve j, a pressure difference thereby erected across the disc tending to augment the spring load and re-seat the valve when the pressure at the seat orifice e<SP>1</SP> falls slightly below that required for opening the valve. Pressure surges lifting the pressurizing valve j cause a leaky plunger part of this valve to close slots k so as to provide only a slow leak. In another embodiment, Fig. 3, a flow spreader plate q placed slightly above an open flow orifice n<SP>1</SP> of an inlet n carries a spring-loaded conical valve-member o which obturates a seat opening leading out of the larger space s above the plate, so that the relief valve member o itself forms a restriction pressurizing the space s and avoiding cavitation beneath the spreader plate q.
GB1243758A 1958-04-18 1958-04-18 Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel Expired GB865470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1243758A GB865470A (en) 1958-04-18 1958-04-18 Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1243758A GB865470A (en) 1958-04-18 1958-04-18 Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel

Publications (1)

Publication Number Publication Date
GB865470A true GB865470A (en) 1961-04-19

Family

ID=10004589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1243758A Expired GB865470A (en) 1958-04-18 1958-04-18 Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel

Country Status (1)

Country Link
GB (1) GB865470A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177481A (en) * 1985-07-02 1987-01-21 Gewerk Eisenhuette Westfalia Pressure-relief valve devices
GB2533177A (en) * 2015-03-24 2016-06-15 Pacson Ltd Pressure relief valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177481A (en) * 1985-07-02 1987-01-21 Gewerk Eisenhuette Westfalia Pressure-relief valve devices
GB2177481B (en) * 1985-07-02 1989-05-04 Gewerk Eisenhuette Westfalia Improvements in pressure-relief valve devices
GB2533177A (en) * 2015-03-24 2016-06-15 Pacson Ltd Pressure relief valve
GB2533177B (en) * 2015-03-24 2016-10-26 Pacson Ltd Pressure relief valve

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