Nominal Diameter：DN150-DN1400
Nominal Pressure：PN16-PN64
Manufacture Design：GB/T 12237,ISO 17292,API 6D,API 607
Face to Face Dimension：GB/T 12221,JB1686,ASME B 16.10
Flange Dimension：GB/T 9124,HG/T 20592,ASME B16.5
Test and Inspection：GB/T 13927,API 598

Products Introduction

The fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. its strength, safety, and resistance to harsh environments have been specially considered in its design. It is suitable for various corrosive and non-corrosive media. Compared to floating ball valves, during operation, the force exerted by the fluid pressure in front of the valve on the ball is entirely transferred to the bearings, without causing the ball to move towards the valve seat, As a result, the valve seat does not bear excessive pressure, leading to smaller torque, less deformation of the valve seat, stable sealing performance, and a long service life, making it suitable for high-pressure and large-diameter applications, The advanced spring,loaded pre-seat assembly has a self-tightening characteristic, achieving upstream sealing, Each valve has two seats, which can seal in both directions, so there is no flow direction imitation, and it is bidirectional.This valve is generally installed horizontally.

 

Products Feature

Easy Operation: The ball is supported by upper and lower bearings, reducing friction and eliminating the excessive torque caused by the huge sealing load formed by the pressure pushing the ball against the sealing seat.

Reliable Sealing Performance: A PTFE elastic material seal ring is embedded within a stainless steel valve seat. The metal valve seat does not have a spring at the end, ensuring sufficient preload on the seal ring. During use, even if the sealing surface wears due to fiction, the valve continues to maintain good sealing performance under the action of the spring.

Fire-Safe Structure: To prevent the PTFE seal ring from burning and causing significant leakage, which could fuel the fire, a fire-safe sealing ring is installed between the ball and the valve seat. In the event of the seal ring burning, the valve seat sealing ring is quickly pushed against the ball by the spring force, creating a metal-to-metal seal and providing a certain level of sealing effect, The fire resistance test complies with AP| 6FA and AP] 607 standards.

Automatic Pressure Relief Function: When the medium pressure in the valve chamber becomes abnormally high and exceeds the preload of the spring, the valve seat retracts and disengages from the ball, achieving automatic pressure relief After the pressure is released, the valve seat automatically resets.