Speciality Valve emerges as the premier Diaphragm Valve Manufacturer in India. Description: 1. Available Materials: Includes Cast Iron, Ductile Iron, Alloy 20, WCB, WC6, WCC, LCB, LCC, SS304, SS316, CF8, CF8M. 2. Sizes: ½” to 12” 3. Class and Nominal Pressure: Class 150 to 600 and Nominal Pressure PN10 to PN100 4. Operation: handwheel and pneumatic and electric actuators. 5. Ends: flanged or threaded ends.