Hydraulics QUANTUM TIC
11-94 10/04
4.6 2/2 way solenoid valve (seated valve)
4.6.1 Up to serial no. A Cylinder port
P-R Pressure or return line port
VS Seated valve
I Solenoid deactivated
II Solenoid activated
Function When the solenoid is deactivated, the load pressure of the cylinder
(acting at port A) presses the ball into its seat.
The connection from port (A) to port (P-R) is blocked.
This ensures that no oil can escape from the cylinder, which would result
in a lowering motion.
When the solenoid is activated, the iron core pushes the ball downward
against the spring-loaded ram.
The oil can
• flow from P to A = raising
• or from A to R = lowering
The valve can be switched manually at the adjusting screw of the
solenoid.
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