We are a professional manufacturer of valves. You are always welcome to consult us. We are a professional valve manufacturer. We sincerely invite agents from all over the world. Product Description: ​1. It is installed in the cab and remotely controlled. ​2. The valve has three working positions: lifting, intermediate stop and descending. ​3. Used with pneumatic directional valve. ​4. The valve has beautiful appearance, self-locking of middle stop position, clear transposition and simple operation. ​ ​Product advantages: ​1. The quality is stable and the consistency between products is good. ​2. The manufacturer supplies and 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.