Liugong loader accessories variable speed control valve is currently in the domestic market when the 5-ton loader with planetary gearbox commonly used valve. This valve has a special pressure regulating spring, installed in the upper part of the accumulator chamber of the slide valve stem, remove the plug bolt of the accumulator, take out the accumulator piston, can see inside there is a thick short and a long and thin spring, the long and thin is.

Take out the spring to look into the hole, you can see the pressure regulating spool, the pressure regulating spring on the spool, the other end of course is against the accumulator piston, can be compressed by the piston. The piston chamber of old valves contained a pressure regulating ring to limit the amount of piston movement. Removing a pressure regulating ring allowed the piston to compress the spring more, and the pressure could be increased. The new no pressure regulating ring, but the pressure regulating spool of the mandrel head protruding is more, can be covered with a or several suitable gaskets, the same to achieve the purpose of the spring is compressed to increase the pressure, and vice versa.

Use model：ZF.4644159347