JPS55126170A - Crossover balance type relief valve - Google Patents
Crossover balance type relief valveInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-03-19 JP JP3261479A patent/JPS55126170A/en active Pending
Cited By (2)
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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