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12)
OPERATION OF OVERLOAD RELIEF VALVE
FUNCTION AS RELIEF VALVE
(1)
The pressurized oil passes through the piston A and orifice A is filled up in chamber A of the
inside space and seat the plunger against the socket and the socket against the housing securely.
Piston A Socket
P
Housing
(2)
When the pressure at port P becomes equal to the set pressure of the spring, the pressurized oil
pushes open the poppet and flows to tank passage (T) through the plunger internal passage,
orifice A, chamber A, periphery orifice B and hole E.
Tank passage
P
Housing
Chamber A
Tank
passage
Plunger Orifice A
T
T
Periphery orifice B
Periphery orifice B
Poppet
Spring
Poppet
Hole E
Spring
2-44
14W92MC41
14W92MC42
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Troubleshooting
