JPS56113875A - Valve device - Google Patents

Valve device

Info

Publication number
JPS56113875A
JPS56113875A JP1540080A JP1540080A JPS56113875A JP S56113875 A JPS56113875 A JP S56113875A JP 1540080 A JP1540080 A JP 1540080A JP 1540080 A JP1540080 A JP 1540080A JP S56113875 A JPS56113875 A JP S56113875A
Authority
JP
Japan
Prior art keywords
valve
valve element
piston
dangerousness
compressed air
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
JP1540080A
Other languages
Japanese (ja)
Inventor
Atsushi Chiba
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 JP1540080A priority Critical patent/JPS56113875A/en
Publication of JPS56113875A publication Critical patent/JPS56113875A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To prevent the dangerousness of wrong operation of a valve, by switching a fluid, which opens or closes a valve element through mechanical interlocking with the section of the drive shaft of a driver and by dispensing with electric control.
CONSTITUTION: To close a gate valve, an electromagnetic change-over valve 16 is energized so that compressed air is introduced into the tube 5 of an air cylinder 3, a piston 4 is pressurized and a valve element 1 is moved leftward. At that time, a stopper 20 collides against a lug 25 so that the motion of the valve element 1 is stopped. Howerver, the pressurization of the piston 4 is continued to move a piston shaft 27 leftward. When an operating member 31 pushes the lever 30 of a mechanical change-over valve 29, compressed air is injected into an air chamber 11 so that a valve seat 8 coupled with bellows 6, 7 is moved and thrusted on the valve element 1 to perform hermetic sealing. This results in preventing the dangerousness of wrong operation of the valve.
COPYRIGHT: (C)1981,JPO&Japio
JP1540080A 1980-02-13 1980-02-13 Valve device Pending JPS56113875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1540080A JPS56113875A (en) 1980-02-13 1980-02-13 Valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1540080A JPS56113875A (en) 1980-02-13 1980-02-13 Valve device

Publications (1)

Publication Number Publication Date
JPS56113875A true JPS56113875A (en) 1981-09-08

Family

ID=11887674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1540080A Pending JPS56113875A (en) 1980-02-13 1980-02-13 Valve device

Country Status (1)

Country Link
JP (1) JPS56113875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209977A (en) * 2014-04-25 2015-11-24 バット ホールディング アーゲー valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209977A (en) * 2014-04-25 2015-11-24 バット ホールディング アーゲー valve

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