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JPS5624273A - Opening/closing valve - Google Patents

Opening/closing valve

Info

Publication number
JPS5624273A
JPS5624273A JP9834179A JP9834179A JPS5624273A JP S5624273 A JPS5624273 A JP S5624273A JP 9834179 A JP9834179 A JP 9834179A JP 9834179 A JP9834179 A JP 9834179A JP S5624273 A JPS5624273 A JP S5624273A
Authority
JP
Japan
Prior art keywords
pressure
valve
chamber
flow
receiving piece
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.)
Granted
Application number
JP9834179A
Other languages
Japanese (ja)
Other versions
JPS5840066B2 (en
Inventor
Shoichi Matsunaga
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.)
F M VALVE SEISAKUSHO KK
F M VALVE Manufacturing CO Ltd
Original Assignee
F M VALVE SEISAKUSHO KK
F M VALVE Manufacturing CO 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 F M VALVE SEISAKUSHO KK, F M VALVE Manufacturing CO Ltd filed Critical F M VALVE SEISAKUSHO KK
Priority to JP9834179A priority Critical patent/JPS5840066B2/en
Publication of JPS5624273A publication Critical patent/JPS5624273A/en
Publication of JPS5840066B2 publication Critical patent/JPS5840066B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To secure valve operation regardless of leakage at the sliding surface of a pressure receiving piece in an opening/closing valve device in which the pressure in the flow-in chamber is to act on both sides of the pressure receiving piece, by providing a pressure relief valve in parallel with the flow control orifice.
CONSTITUTION: While valve 27 is closed, the pressure in a flow-in chamber 2 is introduced to both chambers 12a,12b of a pressure receiving piece housing 12 through No.1 pressure introducing hole 18 and No.2 pressure introducing passage 22 and there no pressure difference is produced, thereby closing of the valve 27 is conducted with the dynamic pressure in flow-in chamber 2 which acts on the back of the valve element 5. When the valve 27 is opened, the pressure in the flow-in chamber 2 is lowered by an orifice 23 and the pressure in the downstream chamber 12b becomes low, and thus the pressure receiving piece 16 is lifted up to open the valve. Because a check valve 25 equipped in parallel with the flow control orifice 24 opens at this time, the pressure in the chamber 12b will not rise up even through the sliding surface of the pressure receiving piece allows minor leakage. The valve element 5 can be thus operated securely.
COPYRIGHT: (C)1981,JPO&Japio
JP9834179A 1979-08-01 1979-08-01 Open/close valve device Expired JPS5840066B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9834179A JPS5840066B2 (en) 1979-08-01 1979-08-01 Open/close valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9834179A JPS5840066B2 (en) 1979-08-01 1979-08-01 Open/close valve device

Publications (2)

Publication Number Publication Date
JPS5624273A true JPS5624273A (en) 1981-03-07
JPS5840066B2 JPS5840066B2 (en) 1983-09-02

Family

ID=14217193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9834179A Expired JPS5840066B2 (en) 1979-08-01 1979-08-01 Open/close valve device

Country Status (1)

Country Link
JP (1) JPS5840066B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181754U (en) * 1984-05-11 1985-12-03 キヤノン株式会社 image forming device
JPH0231975U (en) * 1988-08-25 1990-02-28
JPH0231976U (en) * 1988-08-25 1990-02-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181754U (en) * 1984-05-11 1985-12-03 キヤノン株式会社 image forming device
JPH0231975U (en) * 1988-08-25 1990-02-28
JPH0231976U (en) * 1988-08-25 1990-02-28

Also Published As

Publication number Publication date
JPS5840066B2 (en) 1983-09-02

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