GB885393A - Improvements in and relating to pressure relief valves - Google Patents

Improvements in and relating to pressure relief valves

Info

Publication number
GB885393A
GB885393A GB23178/58A GB2317858A GB885393A GB 885393 A GB885393 A GB 885393A GB 23178/58 A GB23178/58 A GB 23178/58A GB 2317858 A GB2317858 A GB 2317858A GB 885393 A GB885393 A GB 885393A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
ports
cylinder
relief
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
GB23178/58A
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of GB885393A publication Critical patent/GB885393A/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
    • F16K17/0433—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 vibration preventing means
    • 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
    • F16K17/048—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 combined with other safety valves, or with pressure control devices

Landscapes

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

Abstract

885,393. Valves. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. July 18, 1958 [July 18, 1957], No. 23178/58. Class 135. A relief valve comprises a piston closure member 3 in a cylinder 2 formed with inlet and relief ports 14, 29 respectively, the piston being formed with passages 16, 18 placing the ports 14 in communication with the pressure line, and being acted upon by a compression spring 7 in a fluid chamber 24 constituted by a recess in the rear portion of the piston and communicating with the passages 16, 18 through an orifice 23, whereby the valve is prevented from operating as the result of temporary surges in the pressure line. The piston is retained in its normal axial position by a spring ring 4. The valve may be adapted to operate also as a flowregulating valve by mounting the piston-cylinder unit in a housing provided with inlet, outlet and relief ports, the effective area of the outlet port being controlled by the left-hand end of the cylinder under the action of a loading spring, Fig. 3 (not shown). The valve may be employed in a vehicle power-assisted steering system.
GB23178/58A 1957-07-18 1958-07-18 Improvements in and relating to pressure relief valves Expired GB885393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE885393X 1957-07-18

Publications (1)

Publication Number Publication Date
GB885393A true GB885393A (en) 1961-12-28

Family

ID=6832792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23178/58A Expired GB885393A (en) 1957-07-18 1958-07-18 Improvements in and relating to pressure relief valves

Country Status (1)

Country Link
GB (1) GB885393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436271A1 (en) * 1978-09-12 1980-04-11 Komatsu Mfg Co Ltd HYDRAULIC BALANCING DISPENSER-METER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436271A1 (en) * 1978-09-12 1980-04-11 Komatsu Mfg Co Ltd HYDRAULIC BALANCING DISPENSER-METER

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