Production of Z540H, Z540Y, Z540W PN16~PN160 steel bevel gear drive wedge gate valve: Bevel gear drive, flange connection, open rod wedge type elastic gate, The sealing surface material of the seat is surfacing alloy (Z540H-16C~160 Z540Y-16C~160 Z540Y-16I~160I Z540Y-16P~160P Z540Y-16R~160R) and stainless steel (Z540W-16P~160P) Z540w-16r ~160R), nominal pressure PN16~PN160, The body material is carbon steel (Z540H-16C~160 Z540Y-16C~160), chromium-molybdenum alloy steel (Z540Y-16I~160I), stainless steel (Z540W-16P~160P Z540Y-16P~160P Z540W-16R~160R Z540y-16r ~160R) gate valve.