JPS5517776A - Pressure control valve - Google Patents

Pressure control valve

Info

Publication number
JPS5517776A
JPS5517776A JP9123578A JP9123578A JPS5517776A JP S5517776 A JPS5517776 A JP S5517776A JP 9123578 A JP9123578 A JP 9123578A JP 9123578 A JP9123578 A JP 9123578A JP S5517776 A JPS5517776 A JP S5517776A
Authority
JP
Japan
Prior art keywords
valve
serves
self
improve
actuator
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
JP9123578A
Other languages
Japanese (ja)
Inventor
Tadashi Yamauchi
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP9123578A priority Critical patent/JPS5517776A/en
Publication of JPS5517776A publication Critical patent/JPS5517776A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve a control precision of the valve which serves as both a relief valve and a self-suction valve, by allowing a cross-section of a choke to automatically change in proportion to the pressure of an actuator working line.
CONSTITUTION: When an actuator 29 connected to a primary port 11 selfruns, an opening area of chokes 17 and 18 can be held in a maximum condition. In the meantime, when the pressure of the primary port 11 is increased due to a load which works on the actuator 29, only an idle valve 16 is first displaced due to a difference in a power produced as a result of the difference in the area between at both ends of a main valve 13, and thus, the opening area of the chokes 17 and 18 can be changed in a narrow range. This allows a pressure control valve to improve the precision of a valve, which serves as a self-suction valve, without damaging the functioning of a relief valve, and on the contrary, to improve the precision of a valve, which serves as the relief valve, without damaging the functioning of the self-suction valve.
COPYRIGHT: (C)1980,JPO&Japio
JP9123578A 1978-07-25 1978-07-25 Pressure control valve Pending JPS5517776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9123578A JPS5517776A (en) 1978-07-25 1978-07-25 Pressure control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9123578A JPS5517776A (en) 1978-07-25 1978-07-25 Pressure control valve

Publications (1)

Publication Number Publication Date
JPS5517776A true JPS5517776A (en) 1980-02-07

Family

ID=14020750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9123578A Pending JPS5517776A (en) 1978-07-25 1978-07-25 Pressure control valve

Country Status (1)

Country Link
JP (1) JPS5517776A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830011A (en) * 2017-09-30 2018-03-23 潍柴动力股份有限公司 The method and system of valve port area test are carried out based on excavator complete machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830011A (en) * 2017-09-30 2018-03-23 潍柴动力股份有限公司 The method and system of valve port area test are carried out based on excavator complete machine

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