Design Advantage: 1.Wide grooves,wide sealing surface ———— Better airtightness and flow performance , energy conservation 2. Low valve lifts ———— Decrease the valve plate tilting movement,reducing impact force of the valve plate ,long life 3. High performance impact resistance of PEEK valve plate ———— low loss of the valve seat and valve plate ,low noise 4. Sturdy spring ———— low stress and long life 5. Optimum design of the valve bonnet ———— Resistance to oil and viscosity Suitable Area: 1.Small Molecular weight MW<8 2. Low medium pressure condition 3.Oil / Non-Oil condition