Z540H, Z540Y, Z540W type PN16 ~ PN160 steel bevel gear driven wedge gate valve produced by Lianggong Valve Group Co., Ltd. Bevel gear drive, flange connection, wedge-type elastic gate. The seat sealing surface material is surfacing welding alloy, stainless steel, nominal pressure PN16 ~ PN160. The material of the valve body is carbon steel, chrome molybdenum alloy steel, stainless steel gate valve.