JPS5737164A - Relief valve - Google Patents
Relief valveInfo
- Publication number
- JPS5737164A JPS5737164A JP11086680A JP11086680A JPS5737164A JP S5737164 A JPS5737164 A JP S5737164A JP 11086680 A JP11086680 A JP 11086680A JP 11086680 A JP11086680 A JP 11086680A JP S5737164 A JPS5737164 A JP S5737164A
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- poppet
- plunger
- port
- spring
- 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
Links
Landscapes
- Safety Valves (AREA)
Abstract
PURPOSE: To improve the stability of a relief valve at a high temperature by constructing the relief valve such that a pilot throttle almost in an orificelike shape is established between both abutting portions of a pilot poppet and a plunger upon relief operation so as to prevent a rate of vent-flow from being excessively increased.
CONSTITUTION: When fluid pressure transmitted from a pump port P through a through hole 23 to a pilot chamber 16 exceeds a value set by a spring 35, a pilot poppot 31 is forcedly separated from a valve seat 36, allowing a differential pressure corresponding to a rate of vent-flow through the hole 23 to be generated between the port P and the chamber 16. The leftward displacement of the plunger 20 overcoming a spring 22 due to the differential pressure causes both abutting portions 38, 41 of the poppet 31 and the plunger 20 to define therebetween a pilot throttle 44. Simultaneously, a main poppet 8 is displaced leftwards overcoming a spring 11 under action due to the combination of the difference between the left and right effective pressure areas of the main poppet 8 with the above-mentioed differential pressure so that the pump port P is opened to a tank port T for discharging fluid pressure into the tank port T.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11086680A JPS5737164A (en) | 1980-08-11 | 1980-08-11 | Relief valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11086680A JPS5737164A (en) | 1980-08-11 | 1980-08-11 | Relief valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5737164A true JPS5737164A (en) | 1982-03-01 |
JPS613992B2 JPS613992B2 (en) | 1986-02-06 |
Family
ID=14546661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11086680A Granted JPS5737164A (en) | 1980-08-11 | 1980-08-11 | Relief valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5737164A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8360096B2 (en) | 2007-08-15 | 2013-01-29 | Sauer-Danfoss Inc. | Low pressure rise rate pilot operated poppet relief valve |
JP2020060299A (en) * | 2019-12-25 | 2020-04-16 | 株式会社島津製作所 | Control valve and relief valve |
-
1980
- 1980-08-11 JP JP11086680A patent/JPS5737164A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8360096B2 (en) | 2007-08-15 | 2013-01-29 | Sauer-Danfoss Inc. | Low pressure rise rate pilot operated poppet relief valve |
JP2020060299A (en) * | 2019-12-25 | 2020-04-16 | 株式会社島津製作所 | Control valve and relief valve |
Also Published As
Publication number | Publication date |
---|---|
JPS613992B2 (en) | 1986-02-06 |
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