Heavily Lined Body with proper selection of diaphragm, provides unique control on corrosive liquids. Fluids are completely isolated from the actuator and environment. This bi-directional valve is 'Hygienic' design can be sterilized and has a low turbulence to flow. Valve Body:CS-ASTM A216 WCB (DIN 1.0619 GS-C 25). SS-ASTM A351 CF8 (DIN 1.4301). SG Iron-ASTM A536, Gr.60-40-18 (DIN 0.7043) (GGG40.3).