A specially patented 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 Valves the ball assembly is consisting of one solid piece without any loseness so that there is no deterioration of lining in the area of Ball stem welding. 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 are having straight cylindrical part and is neither oval nor rectangular, the port section is round, thus ensuring a flow of fluid without any turbulance. The larger port section and high CV value permit. important savings in the construction of piping units.