JPS5557782A - Compound three port solenoid valve equipped with automatic trouble detector - Google Patents
Compound three port solenoid valve equipped with automatic trouble detectorInfo
- Publication number
- JPS5557782A JPS5557782A JP13088478A JP13088478A JPS5557782A JP S5557782 A JPS5557782 A JP S5557782A JP 13088478 A JP13088478 A JP 13088478A JP 13088478 A JP13088478 A JP 13088478A JP S5557782 A JPS5557782 A JP S5557782A
- Authority
- JP
- Japan
- Prior art keywords
- port
- pressure
- valve
- solenoid valve
- operator
- 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
- Fluid-Driven Valves (AREA)
Abstract
PURPOSE: To improve workability of a work machine connecting to an outlet port by detecting the operational state of the machine from changes of an electric switch opened or closed every time when a valve is switched to alter the position of an operator and finding only breakdown of the valve from malfunction of a rested operator.
CONSTITUTION: If a pilot solenoid valve 2 may be de-actuated during charging, only a main valve 5 is lifted down. As a fluid under pressure in a pressure port P is discharged into a discharge port R, a pressure of the fluid in an outflow port A is limited to rise over a specified value. An actuator connected to the port A is kept in a rest which brings no operation of a work machine and maintains a different bore piston 20 to be pushed to the left end. The electric switch 28 is de- actuated against charging and opening the pilot solenoid valves 2A, 2B cut a current. The pressure port P is shut off due to low pressure in the main valve 5B.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53130884A JPS5810630B2 (en) | 1978-10-23 | 1978-10-23 | Composite 3-port solenoid valve with automatic failure detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53130884A JPS5810630B2 (en) | 1978-10-23 | 1978-10-23 | Composite 3-port solenoid valve with automatic failure detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5557782A true JPS5557782A (en) | 1980-04-28 |
JPS5810630B2 JPS5810630B2 (en) | 1983-02-26 |
Family
ID=15044941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53130884A Expired JPS5810630B2 (en) | 1978-10-23 | 1978-10-23 | Composite 3-port solenoid valve with automatic failure detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5810630B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919293A (en) * | 1972-06-15 | 1974-02-20 |
-
1978
- 1978-10-23 JP JP53130884A patent/JPS5810630B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919293A (en) * | 1972-06-15 | 1974-02-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5810630B2 (en) | 1983-02-26 |
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