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 vesselInfo
- 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
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.
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)
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 |
-
1958
- 1958-04-18 GB GB1243758A patent/GB865470A/en not_active Expired
Cited By (4)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3905382A (en) | Back flow preventor | |
US2503424A (en) | Backflow preventer | |
ES401991A1 (en) | Balanced pressure fuel valve | |
GB1360439A (en) | Continuous flow control apparatus | |
ES454891A1 (en) | Shut-off valve | |
ES286552A1 (en) | Improvements in valves, without spring for fluids (Machine-translation by Google Translate, not legally binding) | |
GB1266511A (en) | ||
US2706488A (en) | Anti-back-flow device | |
GB1319802A (en) | Pressure actuated valve | |
ES418960A1 (en) | Pressure control device for controlling the flow of a fluid medium | |
GB865470A (en) | Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel | |
GB793561A (en) | Pressure regulating valve device | |
GB926180A (en) | Improvements in pressure relief valves, more particularly for hydraulic operating circuits | |
DE1600853A1 (en) | Pressure reducing valve | |
GB1103801A (en) | Container pressurizing and liquid dispensing unit | |
ES344216A1 (en) | Double hydraulic pump with built-in unloading valve | |
ES385029A1 (en) | Valves | |
GB1308491A (en) | Distributor valve units for liquefied gas tanks | |
US2179003A (en) | Liquid pressure adjustable relief valve | |
DE937790C (en) | Membrane system acted upon by liquid pressure, in particular low water protection for gas water heaters | |
GB810835A (en) | Improvements in relief valves | |
GB962291A (en) | Pressure control arrangement for dispensing nozzle | |
GB920837A (en) | Improvements in or relating to liquid flow control devices | |
GB1056342A (en) | Metering device | |
GB1385536A (en) | Fluid flow control valve |