Products Details

GB welded gate valve is a kind of valve designed and manufactured according to Chinese national standard GB, widely used in petroleum, chemical, power station and other industrial fields. It is mainly used in the pipeline as a switch control of the medium, that is, fully open or fully closed mode. GB welded gate valve has the following features:

The length of the structure complies with JB/T74 standards, and the connection flange complies with GB9112 to 9131 standards.
The design standard is GB/T 12234, with small fluid resistance, opening and closing only require small force, no medium flow restriction, and in the opening and closing process, the friction between the disc wedge and the seat is small, to ensure reliable sealing, tightness and long life.
The body material includes carbon steel, alloy steel, stainless steel, etc., nominal diameter range from DN15 to 3000, pressure grade from PN10 to PN420, working temperature from -29℃ to +560℃, operation mode includes hand wheel, gear box, electric, pneumatic, etc.
There are three types of welded gate valve cover design: bolted valve cover, welded valve cover and self-sealing valve cover, you can choose different sealing methods according to the needs.
The valve can be designed as back-to-back construction, and the stem seal is achieved by flexible and woven graphite, ensuring a more reliable seal. In addition, you can also choose pressure seal valve cover type, solid wedge type, non-rising valve stem structure and jacket structure.
GB welded gate valves are designed to meet the needs of industrial applications for valve reliability, durability and versatility, and are one of the important equipment for controlling fluid flow.