Lined Ball Valve

PFA - FEP Lined Ball Valve : For Highly Corrosive Media 

A specially patented Ball Valve having Teflon/PFA Lining directly moulded on all surfaces having contact with the fluid. The thickness of the lining is calculated to ensure total protection against highly corrosive chemicals for long service life.

Unlike conventional Ball Valves the ball assembly consists of one solid piece without any looseness so that there is no deterioration of lining in the area of Ball Stem Selding. The thickness of the lining is absolutely constant throughout to avoid any deformation of the ball.

This is a two piece valve body construction and for special safety precaution the body end fits deeply into the other part of valves. This specially patented spherical design of the valve body and the body end reduces cavity volume in areas around the ball. Thus minimising retention within this areas to reduce product contamination problems.

Ball valve offers a substantially lower torque than equivalent size of plug valve resulting in easy manual quarter turn operation.

Another special feature is that all the valves have a straight cylindrical part and is neither oval nor rectangular,the port section is round, thus ensuring a flow of fluid without any turbulence. The larger port section and high CV Value permit important savings in the construction of piping units.

The gland packing is fully made from PTFE Chevron Rings and is incorporated with springs which keeps continuous pressure on the rings thereby the sealing is absolute.

The valve is designed to withstand temperatures from -45°C to +220°C and is specially lined with an anti-adhesive, self lubricating material with excellent resistance to abrasion and shocks.