SUYAN What European Ram forging steel T power plant cut-off valve uses is the cavity pressure the design structural style which welds from the seal valve cover seal. Enhanced valve′s overall pressure resistance intensity. What the valve core and valve lever′s the seal connection uses is rolling bearing′s design from. Prevents because the pressure produces the valve core holds the deadd phenomenon in the valve chest. Packing box′s place design live load padding′s form, enhanced packing box′s place dense to seal the performance to reduce valve′s operation moment of force.