GATE valve bellow seal acc. to ANSI is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum ,chemical industry ,pharmacy,chemical fertilizer ,electric power industry etc under nominal pressure of CLASS 150~900LBS and working temperature of -29~350°C.

1.This product has logical structure, reliable seal,excellent performance and nice design.
2.The seal surface is build-up welding with Co hard alioy ,which is attrition-resistant ,corrosion-resistant ,  has good friction resistant and long life.
3.The stem quenched and tempered ,and its surface is treated by nitriding treatment,thus it has good corrosion resistant and friction resistant.
4.It has double seal capability ,thus is more relible.
5.The stem may show the position of life ,thus it is clearer.
6.The part material flange and bult weld end dimension may be selected according to current operating condition and Users' requirement ,so that meeting the requirements of various engineering