Flange Knife Gate ValveHuachao Flange Knife Gate Valve is designed with lower operation torque, full bore, high cv, ... of compact structure and light weighted.Hot tags: Flange Knife Gate Valve, China, factory, supplier, cheap, manufacturerResilient Seat Flange Knife ... flange replaceable natural rubber seat provides a tight seat across gate from 0 to 150 psi optional EPDM and Buna seats ...