Wedge Gate Valves factory Introduction Flanged wedge gate valves have extended lifespan and easy installation with pipelines. The gate valve only be fully opened and fully closed, providing secure operation in long run. Features-1 1.OS&Y, bolted bonnet, Flexible or solid wedge; 2.Welded or integral seat with hardfaced alloy steel is more abrasion resistance 3.Ensured stem seals with...