ART110 Ductile Iron Wafer Butterfly Valve ART115 Ductile Iron Wafer Butterfly Valve ART120 Ductile Iron Wafer Butterfly Valve ART135 Ductile Iron Lugged & Tapped Butterfly Vlv ART145 Ductile Iron Lugged & Tapped Butterfly Vlv ART135 Ductile Iron Lugged and Tapped with Gearbox ART135GB Ductile Iron Lugged and Tapped with Gearbox