Knife gate valve is closed, the sealing surface can only rely on pressure to seal the media, that media pressure will depend on the sealing surface pressure gate to the other side of the seat to ensure the sealing surface of the seal,GATE VALVES which is self-sealing. Most of the knife type of valve is used to force seal,Resilient Seated Gate Valves that the valve is closed, forced to rely on external ram pressure to the valve seat to ensure the sealing surface of the sealing valve in the pipe in this category generally should be installed horizontally.Knife gate valve with a simple structure, reasonable design, light and materials, sealing, reliable, lightweight and flexible, small size, channel flow, flow resistance is small, light weight, easy installation, easy disassembly, etc., in the working pressure 1.0MPa -2.5MPa, temperature -29-650