Lever Operated MS Forged locking lever handle is available for 50mm to 150 mm valves. Multy position throttling plate and 90's stops are standard with this handle. Worm Gear Operated An enclosed worm gear operator is available for valve sizes 200mm and above as a standard and for smaller sizes as an option. Gears are factory lubricated and do not require maintenance. A pointer on the gear box indicates the disc position. Pneumatic Operated The pneumatic actuator is fitted directly on the butterfly valve eliminating the need of costly brackets and adaptors. A pointer on the cylinder indicates the position of disc. Material Options 1 - Body: C.I . / CS. S.G. Iron / Cf8 / Cf8m 2 - Disc : CS. / SG. Iron /CF8 / CF8m 3 - Seat : Viton/Nitrile Silicone / Hypalon 4 - Shaft : AISI 410/ 316 / 304 5 -bearing:steel +PTFE 6 - O-ring : Nitrile / EPDM / Viton/silicone 7 - Taper Pin : MS /SS 8 - Plug 9 - Bush : Nylon /PTFE Applications : Cooling Towers , Compressed Air Plants , Sugar Industry , Chemical Industries , Desulphurisation Plants , Drilling Rigs , Gas Plants , Pneumatic Conveying System , Water Treatment Plants , Paper Industry.