JPH0645109Y2 - 異常圧防止兼真空防止弁 - Google Patents

異常圧防止兼真空防止弁

Info

Publication number
JPH0645109Y2
JPH0645109Y2 JP1988154989U JP15498988U JPH0645109Y2 JP H0645109 Y2 JPH0645109 Y2 JP H0645109Y2 JP 1988154989 U JP1988154989 U JP 1988154989U JP 15498988 U JP15498988 U JP 15498988U JP H0645109 Y2 JPH0645109 Y2 JP H0645109Y2
Authority
JP
Japan
Prior art keywords
valve
hole
pressure
side hole
actuator
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 - Lifetime
Application number
JP1988154989U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0276275U (en]
Inventor
光正 明石
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP1988154989U priority Critical patent/JPH0645109Y2/ja
Priority to US07/548,990 priority patent/US5074330A/en
Priority to PCT/JP1989/001208 priority patent/WO1990006463A1/ja
Priority to EP19890913244 priority patent/EP0423343A4/en
Publication of JPH0276275U publication Critical patent/JPH0276275U/ja
Priority to KR1019900701660A priority patent/KR900702283A/ko
Application granted granted Critical
Publication of JPH0645109Y2 publication Critical patent/JPH0645109Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F16K17/196—Equalising valves predominantly for tanks spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • 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
    • F16K17/044—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 more than one spring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7774—Supporting valve spring carried by supporting valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7777—Both valves spring biased

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Safety Valves (AREA)
  • Details Of Valves (AREA)
JP1988154989U 1988-11-30 1988-11-30 異常圧防止兼真空防止弁 Expired - Lifetime JPH0645109Y2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1988154989U JPH0645109Y2 (ja) 1988-11-30 1988-11-30 異常圧防止兼真空防止弁
US07/548,990 US5074330A (en) 1988-11-30 1989-11-30 Anti-abnormal-pressure/vacuum valve
PCT/JP1989/001208 WO1990006463A1 (en) 1988-11-30 1989-11-30 Abnormal pressure prevention-vacuum prevention valve
EP19890913244 EP0423343A4 (en) 1988-11-30 1989-11-30 Abnormal pressure prevention-vacuum prevention valve
KR1019900701660A KR900702283A (ko) 1988-11-30 1990-07-30 이상압 방지겸용 진공방지밸브

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988154989U JPH0645109Y2 (ja) 1988-11-30 1988-11-30 異常圧防止兼真空防止弁

Publications (2)

Publication Number Publication Date
JPH0276275U JPH0276275U (en]) 1990-06-12
JPH0645109Y2 true JPH0645109Y2 (ja) 1994-11-16

Family

ID=15596285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988154989U Expired - Lifetime JPH0645109Y2 (ja) 1988-11-30 1988-11-30 異常圧防止兼真空防止弁

Country Status (5)

Country Link
US (1) US5074330A (en])
EP (1) EP0423343A4 (en])
JP (1) JPH0645109Y2 (en])
KR (1) KR900702283A (en])
WO (1) WO1990006463A1 (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102526379B1 (ko) * 2017-09-21 2023-04-27 가부시키가이샤 코스멕 시퀀스 밸브 부착 실린더 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112763A (en) * 1962-04-12 1963-12-03 Hydraulic Unit Specialities Co Combined high pressure relief and void control valve
NL125372C (en]) * 1962-04-30 1900-01-01
US3194265A (en) * 1962-05-02 1965-07-13 Hydraulic Unit Specialities Co Hydraulic control valve with void control means
GB1045030A (en) * 1964-09-30 1966-10-05 Dowty Hydraulic Units Ltd Fluid valves
JPS5169917U (en]) * 1974-11-29 1976-06-02
JPS56156570A (en) * 1980-05-06 1981-12-03 Aisin Seiki Co Ltd Check valve combined with balance piston type relief valve

Also Published As

Publication number Publication date
US5074330A (en) 1991-12-24
WO1990006463A1 (en) 1990-06-14
KR900702283A (ko) 1990-12-06
JPH0276275U (en]) 1990-06-12
EP0423343A1 (en) 1991-04-24
EP0423343A4 (en) 1991-07-24

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