● Valve back seal type lower switch torque，convenient to install and maintain
● Full bore design eliminates efficiently pressure drop and vortex, and eliminates washing by solids in fluid
● Metal-to-metal seal is used between bonnet and body, gate and seat, body and seat     
● The surface of gate and seat is weld overlay with hard alloy, which has feature of  corrosion resistance and washing resistance
● The bonnet and stem designed with back seal, can replace stem seal ring under pressure
● One side of bonnet is designed with sealant injection in order to supply sealant  and improve seal and lubrication performance of gate and seat
● Can complete with different pneumatic (hydraulic) actuator upon user’s requirements

●阀后密封形式，大幅降低开关力矩，现场维护方便

●全通径设计，有效清除压降和涡流，减缓液体中固体颗粒对阀门的冲刷

●阀盖和阀体，阀板和阀座、阀座和阀座圈之间均采用金属密封

●阀板和阀座圈表面喷（堆）焊硬质合金，具有良好耐磨，耐腐蚀性能

●阀盖和阀杆设计有倒密封结构，便于带压更换阀杆密封圈

●阀盖一侧设有密封脂注入阀，以便补充密封脂，提高阀板，阀座的密封性能及润滑性

●可根据用户要求配备各种规格的气（液）动驱动器