Flanged (Fixed) Ball Valve

Product Overview

Q47 type fixed ball valve compared with the floating ball valve, it is working, fluid pressure in front of the sphere of all is passed to the bearing force, will not make a sphere to the seat to move, so the seat will not bear too much pressure, so the fixed ball valve torque is small, the seat of the small deformation, stable sealing performance, long service life, applicable to high pressure, large diameter.Advanced spring pre - seat assembly with self - tightening characteristics to achieve upstream sealing.Each valve has two seats and can be sealed in each direction, thus installation is free of flow restrictions.Is a new generation of high performance ball valve, flange fixed ball valve is suitable for long pipelines and general industrial pipelines, its strength, safety, resistance to harsh environment in the design of special consideration, suitable for a variety of corrosive and non-corrosive media.
Flanged fixed ball valve working principle:
The ball of the flanged fixed ball valve is fixed and supported by two fixed shafts connected to the ball.When closed, under the action of medium pressure, the ball will not produce displacement, usually connected with the ball on the upper shaft, the lower shaft is equipped with rolling bearings, or sliding bearings.To reduce the friction of journal when opening and closing.Reduce operating torque.This fixed ball valve is suitable for large diameter ball valves.Q47 hard seal fixed ball valve ball.Adopt upper and lower two valve stem fixed.When working, fluid pressure will not make the ball to the valve seat movement, the valve seat will not bear too much pressure and deformation.The valve stem part is equipped with self-lubricating bearings to reduce friction, and the switch torque is small. Both valve seats are preloaded by spring.The seal adopts PTFE inlaid into the steel holder, and a spring is provided at the back of the steel ring to ensure that the valve seat is close to the ball.When the pressure in the valve chamber increases abnormally and exceeds the spring jacking force, the valve seat is withdrawn from the ball to achieve the effect of automatic pressure relief, and the valve seat is automatically reset after pressure.The advanced structure makes the sealing performance of the fixed ball valve stable, labor-saving and long service life. It is extremely suitable for long distance pipeline and general pipeline.