Design Advantage: 1.Multimedia Grooves--Large flow area, low loss of the valve 2. The double damping design--low impact when opening and closing 3. The tilt motion of the valve is low--low impact speed, long life 5. Soil Resistance--Resistance to liquid and impurities and oil viscosity, high reliability  Suitable Area: 1.The condition of medium-high pressure 2. Medium-low speed condition, rotation rate < 1000 rpm 3. Different designs for Oil and Non-Oil condition