JPS5556209A - Reducing valve with emergency cut-off system - Google Patents

Reducing valve with emergency cut-off system

Info

Publication number
JPS5556209A
JPS5556209A JP12953778A JP12953778A JPS5556209A JP S5556209 A JPS5556209 A JP S5556209A JP 12953778 A JP12953778 A JP 12953778A JP 12953778 A JP12953778 A JP 12953778A JP S5556209 A JPS5556209 A JP S5556209A
Authority
JP
Japan
Prior art keywords
valve
pressure
reducing valve
reducing
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
JP12953778A
Other languages
Japanese (ja)
Other versions
JPS6145251B2 (en
Inventor
Hiroshi Morita
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12953778A priority Critical patent/JPS5556209A/en
Publication of JPS5556209A publication Critical patent/JPS5556209A/en
Publication of JPS6145251B2 publication Critical patent/JPS6145251B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Pressure (AREA)

Abstract

PURPOSE: To make it possible to obtain adequate feed water pressure in accordance with the quantity of feed water and also to close a main valve automatically in case of a burst of a water pipe, etc., by providing several pilot valves to a reducing valve fitted to a feed water duct.
CONSTITUTION: When a flow rate at reducing valve 1 is low, passage a-b of alternation pilot valve 9 is open because of a difference between pressure before and that after orifice 13 to link intake 2 of reducing valve 1 to work room 5 of main valve 4 and pressure at outlet 3 of reducing valve 1 is controlled to set pressure set to reducing pilot valve 10 which exercise a supervision over the pressure. When the flow rate at reducing valve 1 increases, passage b-c of valve 9 is opened and work room 5 is reduced in pressure to make main valve 4 fully open. Once the rate at reducing valve 1 is excessive, passages Q-R and MN of emergence cutting-off pilot valves 11 and 12 are close and open respectively and main valve 4 is close.
COPYRIGHT: (C)1980,JPO&Japio
JP12953778A 1978-10-23 1978-10-23 Reducing valve with emergency cut-off system Granted JPS5556209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12953778A JPS5556209A (en) 1978-10-23 1978-10-23 Reducing valve with emergency cut-off system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12953778A JPS5556209A (en) 1978-10-23 1978-10-23 Reducing valve with emergency cut-off system

Publications (2)

Publication Number Publication Date
JPS5556209A true JPS5556209A (en) 1980-04-24
JPS6145251B2 JPS6145251B2 (en) 1986-10-07

Family

ID=15011965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12953778A Granted JPS5556209A (en) 1978-10-23 1978-10-23 Reducing valve with emergency cut-off system

Country Status (1)

Country Link
JP (1) JPS5556209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087011U (en) * 1983-11-17 1985-06-15 株式会社山武 Flow rate adjustment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087011U (en) * 1983-11-17 1985-06-15 株式会社山武 Flow rate adjustment device

Also Published As

Publication number Publication date
JPS6145251B2 (en) 1986-10-07

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