Products knowledge

flow toward the spool to open the direction of open-type flow, cavitation, erosion a major role in the sealing surface, so that spool and the spool valve seat sealing surface of the roots will soon be destroyed; flow towards the closure of the direction of a closed-type flow, cavitation , erosion effect of reducing costs, the valve seat sealing surface below the sealing surface and the valve core to protect the roots, the prolongation of life. Therefore, for flow to open the valve type used, when the more prominent problems in extending life when you can simply change the flow of life-prolonging an ~ 2-fold.