Precision dispensing controller: 1. Suitable for dehydration with good fluidity and low viscosity; 2. Adjustable thimble double-action dispensing valve, which can be connected to all kinds of needle outlets, and can be used with any Pressure barrel connection use; 3. It can be equipped with several dispensing valves with automatic dispensing machine at the same time; 4. Increase output and save production man-hours on a large scale; 5. Reduced consumption, small size, light weight, strong corrosion resistance;