In improper use of the metal hard seal butterfly valve sealing surface service life will be reduced, poor sealing performance.
When products in strict accordance with national standards for butterfly valve seal test, seal for kg 1.1 times the pressure of the valve, we are testing in applying a between the seal face and seat, after the completion of the valve in the process of transportation or loading and unloading process will inevitably enter some sundries and particle items we are in now, after receipt of the valve after the valve to open the first 90 degrees, dry clean cloth seal face and seat of applying, then don't let the groceries, wash with water and particle thing card in the seat, make sure no debris after the valve closed. This will achieve the same quality as the factory to achieve zero leakage! Whether it is hard seal butterfly valve, soft seal butterfly valve, gate valve, ball valve, globe valve, check valve, should check the sealing surface is clean and then open or close!