This type can up to severe requirement in oil field..
　　Flange connected to the soft mud valve sealing flange with the standard size, work pressure for 3000 and 5000 PSI, temperature can reach 400 ℉.
　　Soft seal the valve in the mud there are 316 pieces of stainless steel gate and the stem and acrylonitrile-butadiene rubber valve seats, the choice of pieces within a nickel-plated carbon steel gate, Monel copper - aluminum and nickel alloy gate bronze ram , Valve seats and a fluorine rubber Hypalon rubber, and 303 stainless steel stem.
　　Structural features
　　All soft sealed mud gate valves connected by flanges are up to size of flange,the valves are designed with shown lever,small torsion easy to open&close.permanent lubircation for lever.high press&low sealing are effected by sustaining ring between lever and nuts.
Usage
　　Mud bump tube line oil&gas tube line corrosive water treatment tube line well gate devicesliquid of drilling wellCementing services, wellhead and the disposal of chemical supplies wells.

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