supply of valves , 80 nb double disc valve with matching flange with cylinder end cover- alloy cast iron 250 bhn (min)/ductile iron, middle ring-alloy cast iron 250 bhn (min)/ductile iron, disc- wear resistant special alloy 500 bhn (min.) seat ring-wear resistant special alloy 500bhn (min), gland-leaded tin bronex, gland packing-kevlar packing, pin-stainless steel, disc drive-carbon steel, spring-spring steel, pneumatic actuator- double acting actuator, working pressure rating-6 bar, end connection- ansi b 16.1, class 125 of to suit customer requirement, actuator- pneumatic air cylinder double acting. , complete rotary segregating valve (seat/gate fitted) of size 200 nb