Extended Body Gate Valve

KOSEN Pressure Seal Gate Valves is a valve realizing the closing and opening function by lifting the disc up&down as the closure member. The main advantages of API Stainless Steel Gate valve are smooth flowing passage, small flowing resistance and small operation torque, while the main disadvantages of this valve are: easy-damaged sealing face, long closing&opening time, large volume&weight. Gate valve is widely used on pipeline as it's suitable to be manufactured with big size. Gate valve is and generally for cutting off purpose but not intended to be used as a regulating valve because the sealing face would be corroded by the medium easily when valve is not in fully open or closed position.

KOSEN Forged steel cryogenic valves are mainly applicable to various piping systems of thermal power plants, cutting off or connecting piping medium. Applicable medium: water, steam and other non corrosive media. Compared with other valve products, forged steel valves are characterized by high temperature, high pressure and unique self sealing design. The higher the pressure, the more reliable the sealing is. Because of the special technical characteristics and special working conditions, the products also have the characteristics that other products can not replace.

KOSEN Forged steel Gate Valves are primarily used for stop valves fully opened or fully closed .They are not normally considered for throttling purposes,but more for slurries,viscous fluids,etc. Gate valves are characterized by a traveling wedge ,which is moved with the operation of the stem nut. Gate valves usually have a minimum pressure drop when fully open,provide tight shut-off when fully closed,and remain relatively free of contamination buildup.

The opening and closing parts of Forged Steel Bellows Gate Valves are plug valves, the sealing faces are flat or conical, and the disc moves along the centerline of the fluid in a straight line. The motion form of the stem has the lifting rod type (the stem lift, the handwheel not lifting), also the lifting and rotating rod type (the handwheel and the stem rotates with the lift, the nut is located on the body). The corrugated valve is only suitable for full opening and full closing, and no adjustment and throttling are allowed. Valves of this type should be installed horizontally in pipes.