GB Flange Ball Valve

The GB Flange Ball Valve is a core industrial fluid control valve with national standard flange connection, which realizes pipeline on-off and flow regulation through 90° rotation of the ball core, and is one of the most widely used mainstream shut-off valves in global industrial pipeline systems.

This valve is mainly composed of core components including valve body, floating ball, valve stem, valve seat, sealing assembly and national standard flange ends. In addition to the standard manual actuation, it can also be equipped with worm gear, pneumatic, electric and hydraulic actuation devices to meet the automatic control requirements of different industrial working conditions. It has the core advantages of fast opening and closing, extremely low fluid resistance, compact structure, reliable bidirectional sealing, wide media compatibility and convenient installation and maintenance. With stable long-term operation performance and strong adaptability to complex working conditions, the GB Flange Ball Valve has become an indispensable key component in industrial fluid transmission and control systems.

Product Specifications

Application Standards

Main Application Industries

● Oil & Gas, Petrochemical Refining, and Long-distance Pipeline Transmission

● Power Generation (Water, Steam & Oil Circuits in Thermal and Nuclear Power Plants)

● Metallurgy, Papermaking, and Textile Manufacturing

● Municipal Water Supply, District Heating, and Sewage Treatment

Working Principle

The working principle of the GB Flange Ball Valve relies on the 90° rotary motion of the ball core driven by the valve stem, to realize full opening, full closing and precise flow control of the pipeline:

Full Open State

When the valve stem drives the ball to rotate 90° to make the through-hole of the ball completely aligned with the pipeline axis, the flow channel is fully connected. At this time, the fluid resistance is minimal, and the medium can pass through the valve body with almost no pressure loss.

Full Closed State

When the valve stem drives the ball to rotate 90° in the reverse direction, the through-hole of the ball is completely perpendicular to the pipeline axis. The ball core is tightly pressed against the valve seat by the pipeline medium pressure, forming a reliable zero-leakage seal, and the medium flow is completely cut off.

Flow Control State

When the ball is rotated to any angle between 0° and 90°, the effective flow area between the ball through-hole and the pipeline can be adjusted steplessly, so as to realize precise control of the medium flow rate and pipeline pressure, meeting the variable working condition requirements of industrial processes.