Turn on or turn off the pipelines where the nominal pressure is less than 1.0Mpa,it is widely used in petroleum, chemical, pharmaceutical, electric power industry as an opening and closing function. Features: 1) Sizes: DN 40mm - 800mm 2) Working Medium: steam, water, oil,coalgas 3) Body,bonnet,wheel: grey iron 4) Disc: grey iron/brass+grey iron 5) Stem: carbon steel,stainless steel 6) Type: Z41T/W-10 rising stem wedge gate valve 7) Pressure: PN10 PN16 8) Connection type: flange end 9) Advantages: good appearance, long service life and flexible switch 10)Conveyance: By steam ship