JPS57173676A - Check valve - Google Patents

Check valve

Info

Publication number
JPS57173676A
JPS57173676A JP5849981A JP5849981A JPS57173676A JP S57173676 A JPS57173676 A JP S57173676A JP 5849981 A JP5849981 A JP 5849981A JP 5849981 A JP5849981 A JP 5849981A JP S57173676 A JPS57173676 A JP S57173676A
Authority
JP
Japan
Prior art keywords
dash pot
valve body
function
fluid
check valve
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.)
Pending
Application number
JP5849981A
Other languages
Japanese (ja)
Inventor
Yoshikatsu Enokida
Sadao Mizuno
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5849981A priority Critical patent/JPS57173676A/en
Publication of JPS57173676A publication Critical patent/JPS57173676A/en
Pending 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member

Abstract

PURPOSE:In a check valve employed in an atomic furnace equipped with a dash pot, to enable the checking of the function of the dash pot by applying the force on the dash pot when the valve body is open thereby detecting the function. CONSTITUTION:The valve body 2 is opened due to the flow of the fluid in the arrow direction B, but in case of an atomic furnace if the fluid will flow reversely while the circulation pump is stopped the valve body 2 will close. But at this tim the dash pot 4 will perform the closing function of the valve body 2 slowly. A dash pot function inspector 11 incorporating a rod 8 and a metal rod 9 is provided in the dash pot 4. If the dash pot 4 is functioning erroneously, the head section 5 will not move well thereby the reaction will be applied on the metal rod 9 to produce the distortion in the housing 10 which is detected by a strain meter 16.
JP5849981A 1981-04-20 1981-04-20 Check valve Pending JPS57173676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5849981A JPS57173676A (en) 1981-04-20 1981-04-20 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5849981A JPS57173676A (en) 1981-04-20 1981-04-20 Check valve

Publications (1)

Publication Number Publication Date
JPS57173676A true JPS57173676A (en) 1982-10-26

Family

ID=13086107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5849981A Pending JPS57173676A (en) 1981-04-20 1981-04-20 Check valve

Country Status (1)

Country Link
JP (1) JPS57173676A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7134448B2 (en) 2004-06-28 2006-11-14 Vid A.P.S. Transducer for monitoring the position of a movable body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7134448B2 (en) 2004-06-28 2006-11-14 Vid A.P.S. Transducer for monitoring the position of a movable body

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