The protruding part above and below the multi-way valve is the safety valve, and the safety valve pressure of the entire multi-way valve is close to the P port, which is equivalent to the system pressure of the entire forklift. The general pressure of the safety valve is 18.5-21Mpa, and all forklifts are adjusted at the factory. Later, if the pressure is not correct, you can manually adjust the pressure. Loosen the nut pointed by the red arrow, this is the lock nut, and the screw inside is a hexagon socket. Turn it clockwise to increase it, and turn it counterclockwise to decrease it. The last is to measure the system pressure through the pressure gauge. After adjusting in place, tighten the lock nut. Then each unit has a corresponding overload valve.
When purchasing a forklift, the standard configuration is a two-way multi-way valve, and additional functions will cost extra, similar to the optional accessories installed when buying a car. In most cases, the three or four joints are equipped with accessories, and some customers directly use the original factory if they do not have the ability to assemble them themselves. Some customers can add a five-way valve and plug the oil ports with plugs in order to have the extended function of the forklift in the future. When adding attachments in the future, just connect the pipe and handle rod, and there is no need to replace the entire multi-way. valve. Because of the heavy workload of replacing the multi-way valve, a lot of things have to be dismantled, and then the original one is wasted.
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