CA971856A - Pilot operator for safety valve - Google Patents

Pilot operator for safety valve

Info

Publication number
CA971856A
CA971856A CA162,054A CA162054A CA971856A CA 971856 A CA971856 A CA 971856A CA 162054 A CA162054 A CA 162054A CA 971856 A CA971856 A CA 971856A
Authority
CA
Canada
Prior art keywords
safety valve
pilot operator
pilot
operator
safety
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
CA162,054A
Other languages
English (en)
Other versions
CA162054S (en
Inventor
Homer E. Ferrill
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 Dresser Industries Inc filed Critical Dresser Industries Inc
Application granted granted Critical
Publication of CA971856A publication Critical patent/CA971856A/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
    • F16K17/10—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
CA162,054A 1972-02-09 1973-01-25 Pilot operator for safety valve Expired CA971856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22486272A 1972-02-09 1972-02-09

Publications (1)

Publication Number Publication Date
CA971856A true CA971856A (en) 1975-07-29

Family

ID=22842544

Family Applications (1)

Application Number Title Priority Date Filing Date
CA162,054A Expired CA971856A (en) 1972-02-09 1973-01-25 Pilot operator for safety valve

Country Status (11)

Country Link
JP (1) JPS4892920A (fr)
AT (1) AT325910B (fr)
BE (1) BE795088A (fr)
CA (1) CA971856A (fr)
CH (1) CH569214A5 (fr)
DE (1) DE2306220A1 (fr)
ES (1) ES411393A1 (fr)
FR (1) FR2171344B1 (fr)
GB (1) GB1377331A (fr)
IT (1) IT977281B (fr)
NL (1) NL7301513A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586533A (en) * 1985-07-01 1986-05-06 Crosby Valve & Gage Company Non-flowing modulating pilot operated relief valve
US5217047A (en) * 1991-05-30 1993-06-08 Coltec Industries Inc. Solenoid operated pressure regulating valve
CN112797221B (zh) * 2021-03-01 2022-09-06 四川长仪油气集输设备股份有限公司 先导轴流式安全阀

Also Published As

Publication number Publication date
AT325910B (de) 1975-11-10
DE2306220A1 (de) 1973-08-23
ATA79573A (de) 1975-01-15
GB1377331A (en) 1974-12-11
IT977281B (it) 1974-09-10
ES411393A1 (es) 1976-06-01
JPS4892920A (fr) 1973-12-01
NL7301513A (fr) 1973-08-13
FR2171344B1 (fr) 1976-09-10
BE795088A (fr) 1973-05-29
FR2171344A1 (fr) 1973-09-21
CH569214A5 (fr) 1975-11-14

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