... , Single Disc, Double Disc 9)Operated Way: Handwheel, Gear, Pneum Wedge Gate ValveWedge Gate Valve SIZE: 1/2"-40" CLASS: 150LB ... and gear drive 5) Structure types: Elastic wedge type single flash board, stiff wedge type single Flash board and double flash type ... to connect or cut off The medium in the pipelines Wedge Gate Valve