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Butterfly Valve design is the most common type of rotary valve and provides low weight to Cv Ratio combined with simplicity of design and comparatively low cost. It is simple device to control or block the flow, a single vane Or wafer disc pivots in the valve body and find wide application for throttling or two position control in the chemical, paper & pulp, sugar Industries, cooling water circulation, water treatment plants, compressed air, gas plant, flue gas desulphurization plants etc.
Butterfly Valves have been around industry for decades, performing well defined tasks and are Economic alternative to Gate valve, Ball valve, Plug valve etc.
| Specification | |
|---|---|
| Design | Wafer |
| Size | 50 to900 mm (2" to 36") |
| Rating | 150 ANSI |
| Flow Characteristic | Throttling, On-Off. |
| Material | Body : Cast Iron, Carbon Steel, Stainless Steel etc. Vane : Stainless Steel Body Sleeve : Neoprene, Nitrile, Teflon, EPDM, Silicon, Butyl, Viton etc. Soft Seat : Teflon Gland Packing : PTFE V Rings upto 1800 C Grafoil upto 4000 C. |
| Actuator Type | Diaphragm,. Rotary, Piston, Electric |
| Diaphragm | Nitrile / Neoprene |
| Spring Range | 3- 15 Psig ( 0.2 - 1.0 Kg/Cm2 ) 6 - 30 Psig ( 0.4 - 2.0 Kg/Cm2) |
| Air Supply | 20 - .35 Psig (1.4 - 2.5 Kg/Cm2) |
| Air Connection | 1/4" or 1/ 2" NPT |
| Accessories Optional | Valve Positioner - Pneumatic, Electro Pneumatic, Airset, Solenoid Valve, Air Lock, Volume Booster, I/P Converter, Position Transmitter, Limit - Proximity Switches etc. Top or Side Mounted Handwheel |
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