Knife gate valve Hyunwoo knife gate valves are designed to handle the process industries ash, pulp&paper, power/utility, oil and gas production, chemical refining. Hw knife gate valves have a lug face to face & raised face to face body design. Available seats are metal & resilient seat especially epdm, poly-amide, teflon, silicone, etc. Design feature also include a raised face seat with the groove that prevents clogging.(as the valve is open the flow cleans the groove) Hw kgv is offered a variety of actuator including handwheel, chain, gear, electric, air or hydraulic actuation. 50a ~ 1350a