JPS5517780A - Pilot valve - Google Patents

Pilot valve

Info

Publication number
JPS5517780A
JPS5517780A JP9199478A JP9199478A JPS5517780A JP S5517780 A JPS5517780 A JP S5517780A JP 9199478 A JP9199478 A JP 9199478A JP 9199478 A JP9199478 A JP 9199478A JP S5517780 A JPS5517780 A JP S5517780A
Authority
JP
Japan
Prior art keywords
chamber
piston
pressured
valve
water
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
JP9199478A
Other languages
Japanese (ja)
Other versions
JPS6132542B2 (en
Inventor
Tsutomu Nakanishi
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP9199478A priority Critical patent/JPS5517780A/en
Publication of JPS5517780A publication Critical patent/JPS5517780A/en
Publication of JPS6132542B2 publication Critical patent/JPS6132542B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To enable a simplifying of a valve structure, by controlling discharging or closing of pressured water in a piston chamber in such a manner as slides a piston having two surfaces, whose pressured areas are different from each other, by the use of water pressure of pressured water in a main valve opening closing piston chamber of a reverse flow valve.
CONSTITUTION: Either of an electromagnetic valve (a) and a manual valve b is opened in the case of the occurrence of fire, and primary pressured water, i.e., pressured water in a piston chamber P is fed to an opening pressure surface chamber 5R through a passage hole 23 and pipings 8 and 9 to work on an opening pressure surface 5 of a piston 2. Since the opening pressure surface 5 is larger than a closing pressure surface 4, the piston 2 is pushed upward, and a secondary valve 6 parts from a upper cover 21. A secondary valve chamber 6R is connected to the piston chamber P through the medium of a passage hole 22, and the pressured water in the chamber P flows into the secondary valve chamber 6R. Then the pressured water is discharged to the outdoor through the discharge hole 10, and thus, the piston chamber P is released from being pressured by the pressured water.
COPYRIGHT: (C)1980,JPO&Japio
JP9199478A 1978-07-27 1978-07-27 Pilot valve Granted JPS5517780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9199478A JPS5517780A (en) 1978-07-27 1978-07-27 Pilot valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9199478A JPS5517780A (en) 1978-07-27 1978-07-27 Pilot valve

Publications (2)

Publication Number Publication Date
JPS5517780A true JPS5517780A (en) 1980-02-07
JPS6132542B2 JPS6132542B2 (en) 1986-07-28

Family

ID=14041980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9199478A Granted JPS5517780A (en) 1978-07-27 1978-07-27 Pilot valve

Country Status (1)

Country Link
JP (1) JPS5517780A (en)

Also Published As

Publication number Publication date
JPS6132542B2 (en) 1986-07-28

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