JPS55126170A - Crossover balance type relief valve - Google Patents

Crossover balance type relief valve

Info

Publication number
JPS55126170A
JPS55126170A JP3261479A JP3261479A JPS55126170A JP S55126170 A JPS55126170 A JP S55126170A JP 3261479 A JP3261479 A JP 3261479A JP 3261479 A JP3261479 A JP 3261479A JP S55126170 A JPS55126170 A JP S55126170A
Authority
JP
Japan
Prior art keywords
spring chamber
rod
poppet
port
liquid pressure
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
JP3261479A
Other languages
Japanese (ja)
Inventor
Yutaka Hirata
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP3261479A priority Critical patent/JPS55126170A/en
Publication of JPS55126170A publication Critical patent/JPS55126170A/en
Pending legal-status Critical Current

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  • Safety Valves (AREA)

Abstract

PURPOSE: To prevent the phenomenon of relief pressure fall at the time when the upper stream side relief valve starts blowing by making the rod as a separate body from the pilot valve seat.
CONSTITUTION: When the liquid pressure of port 36 rises, the liquid pressure of spring chamber 33, which is connected to port 36 through throttle path 35, rises also, and it pushes rod 22 to the left and opens poppet 27' via rod 22'. By this, spring chamber 33' links to the tank side through spring chamber 39'. When the liquid pressure of port 36 exceeds the preset value, poppet 27 opens, spring chamber 33 links to the tank through spring chamber 39, and plunger 21 moves back, but rod 22 receives back pressure from throttle path 37 and maintains poppet 27 in open state. Relief oil which has flowed into cylindrical seat 30 pushes cylindrical seat 30' but oil in spring chamber 33' is discharged from throttle paths 35', 37'. As a result, the damping force is small, and plunger 21' and cylindrical seat 30' move quickly to the left.
COPYRIGHT: (C)1980,JPO&Japio
JP3261479A 1979-03-19 1979-03-19 Crossover balance type relief valve Pending JPS55126170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3261479A JPS55126170A (en) 1979-03-19 1979-03-19 Crossover balance type relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3261479A JPS55126170A (en) 1979-03-19 1979-03-19 Crossover balance type relief valve

Publications (1)

Publication Number Publication Date
JPS55126170A true JPS55126170A (en) 1980-09-29

Family

ID=12363723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3261479A Pending JPS55126170A (en) 1979-03-19 1979-03-19 Crossover balance type relief valve

Country Status (1)

Country Link
JP (1) JPS55126170A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1890064A2 (en) * 2006-08-16 2008-02-20 Volvo Construction Equipment Holding Sweden AB Pressure control valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1890064A2 (en) * 2006-08-16 2008-02-20 Volvo Construction Equipment Holding Sweden AB Pressure control valve
EP1890064A3 (en) * 2006-08-16 2009-12-09 Volvo Construction Equipment Holding Sweden AB Pressure control valve

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