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JPS56160480A - Open/close device for valve - Google Patents

Open/close device for valve

Info

Publication number
JPS56160480A
JPS56160480A JP6300380A JP6300380A JPS56160480A JP S56160480 A JPS56160480 A JP S56160480A JP 6300380 A JP6300380 A JP 6300380A JP 6300380 A JP6300380 A JP 6300380A JP S56160480 A JPS56160480 A JP S56160480A
Authority
JP
Japan
Prior art keywords
pressure
valve
working air
actuator
close
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
JP6300380A
Other languages
Japanese (ja)
Other versions
JPS5845628B2 (en
Inventor
Tamotsu Fujii
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.)
Nakakita Seisakusho Co Ltd
Original Assignee
Nakakita Seisakusho 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 Nakakita Seisakusho Co Ltd filed Critical Nakakita Seisakusho Co Ltd
Priority to JP55063003A priority Critical patent/JPS5845628B2/en
Publication of JPS56160480A publication Critical patent/JPS56160480A/en
Publication of JPS5845628B2 publication Critical patent/JPS5845628B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To heighten the safety of a valve with a device which opens or closes the valve by a double-acting pneumatic actuator, by using air pressure previously stored in a pressure accumulator, to entirely open or close the valve when working air pressure has fallen due to a trouble or the like.
CONSTITUTION: A double-acting pneumatic actuator 3 for opening or closing a valve in a pipe passage 1 is driven by working air supplied from a working air pressure source such as a compressor through an operating means 5. A pressure accumulator 6 and a means 7 for detecting the pressure of the working air are provided for the supply passage of the working air. When the fall in the pressure of the working air due to a trouble or the like is found out by the pressure detector means 7, a change-over means 8 is operated to connect the pressure accumulator 6 to one pressure chamber of the actuator 3 and an atmosphere change-over means 9 is operated to connect the other pressure chamber of the actuator 3 to the atmosphere. As a result, the actuator 3 is driven to entirely open or close the valve 2.
COPYRIGHT: (C)1981,JPO&Japio
JP55063003A 1980-05-12 1980-05-12 Valve opening/closing device Expired JPS5845628B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55063003A JPS5845628B2 (en) 1980-05-12 1980-05-12 Valve opening/closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55063003A JPS5845628B2 (en) 1980-05-12 1980-05-12 Valve opening/closing device

Publications (2)

Publication Number Publication Date
JPS56160480A true JPS56160480A (en) 1981-12-10
JPS5845628B2 JPS5845628B2 (en) 1983-10-11

Family

ID=13216703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55063003A Expired JPS5845628B2 (en) 1980-05-12 1980-05-12 Valve opening/closing device

Country Status (1)

Country Link
JP (1) JPS5845628B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020008105A (en) * 2018-07-10 2020-01-16 株式会社鷺宮製作所 Temperature-sensitive control valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429728A (en) * 1977-08-01 1979-03-05 Masaya Nagai Measure for ripeness of watermelon

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429728A (en) * 1977-08-01 1979-03-05 Masaya Nagai Measure for ripeness of watermelon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020008105A (en) * 2018-07-10 2020-01-16 株式会社鷺宮製作所 Temperature-sensitive control valve

Also Published As

Publication number Publication date
JPS5845628B2 (en) 1983-10-11

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