JPS56147970A - Pressure control valve - Google Patents

Pressure control valve

Info

Publication number
JPS56147970A
JPS56147970A JP5044280A JP5044280A JPS56147970A JP S56147970 A JPS56147970 A JP S56147970A JP 5044280 A JP5044280 A JP 5044280A JP 5044280 A JP5044280 A JP 5044280A JP S56147970 A JPS56147970 A JP S56147970A
Authority
JP
Japan
Prior art keywords
pressure control
control valve
composite alloy
piston
carbide particles
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
JP5044280A
Other languages
Japanese (ja)
Inventor
Yoshimichi Akasaka
Takeshi Ichiyanagi
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 JP5044280A priority Critical patent/JPS56147970A/en
Publication of JPS56147970A publication Critical patent/JPS56147970A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To permit a pressure control valve to be sufficiently used even in highly water-containing operating liquid by forming the piston and the whole seat of a relief valve from the composite alloy with which ultra hard carbide particles are combined.
CONSTITUTION: At least one of or both of a piston 10a and a seat 10b are formed from the composite alloy which is prepared by combining the super hard carbide particles finely with Cr-Mo steel base. The relief valve using the composite alloy has a high corrosion resistance to the highly water-containing operating liquid such as soluble oil.
COPYRIGHT: (C)1981,JPO&Japio
JP5044280A 1980-04-18 1980-04-18 Pressure control valve Pending JPS56147970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5044280A JPS56147970A (en) 1980-04-18 1980-04-18 Pressure control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5044280A JPS56147970A (en) 1980-04-18 1980-04-18 Pressure control valve

Publications (1)

Publication Number Publication Date
JPS56147970A true JPS56147970A (en) 1981-11-17

Family

ID=12858969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5044280A Pending JPS56147970A (en) 1980-04-18 1980-04-18 Pressure control valve

Country Status (1)

Country Link
JP (1) JPS56147970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223907A (en) * 2007-03-13 2008-09-25 National Institute Of Advanced Industrial & Technology Back pressure regulating valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965910A (en) * 1972-09-11 1974-06-26
JPS52139878A (en) * 1976-05-17 1977-11-22 Hitachi Ltd Oil pressure servo-valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965910A (en) * 1972-09-11 1974-06-26
JPS52139878A (en) * 1976-05-17 1977-11-22 Hitachi Ltd Oil pressure servo-valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223907A (en) * 2007-03-13 2008-09-25 National Institute Of Advanced Industrial & Technology Back pressure regulating valve

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