Product Description: Product Name: pneumatic directional valve 1. It is installed on the hydraulic oil tank. 2. The car can be lifted, stopped and lowered. 3. It has the function of safe overflow and can effectively protect the hydraulic system. 4. The built-in adjustable relief valve can set the system safety pressure. Product advantages: 1. The products are supplied by manufacturers with stable quality and good consistency between products. 2. Supplied by the manufacturer, the output is guaranteed. 3. The product is widely used in the hydraulic system of dump truck with good versatility. 4. The product is easy to install and maintain.