Remote valve (pilot valve) valve body has an oil port P (primary pressure) and an oil port T (fuel tank). Further, a secondary pressure (secondary pressure) can be obtained by the oil port 1, the port 2, the oil port 3, the oil port 4, and the oil port 4.
The pressure reducing valve is mounted in a vertical hole of the valve body.
The pressure reducing valve is made of a springs, returning springs, stop blocks, spring seats, and gaskets. Setting the secondary pressure spring - --preset pressure at 5 to 20.5 kgf / cm2 (depending on the model). The spool is pushed back to the push rod.
When the push rod is pushed downward, the spring housing also reduces and changes the setting of the secondary pressure spring.