Description
Audco’s SG Iron Butterfly Valve (SG Iron Disc, Nitrile Liner, Lever, PN 20) is supplied in 50 mm to 300 mm at PN 20. Butterfly valves become the economical choice as bore increases: the disc rotates within the body rather than lifting clear of it, so the valve stays short and light where a gate valve would be neither. Lever operated, so the position is readable from across a plant room. Ductile iron carries considerably more strength and impact resistance than grey cast iron for the same section — the reason it is specified for buried and higher-pressure mains. Full dimensions, catalogue references and current pricing for every size are listed in the table above.
