Home / Butterfly Valve 050mm Semi Lugged. Butterfly Valve 050mm Semi Lugged. Add to your Wish List £45.00 (£54.00) We are a specialist supplier of standard and bespoke flow control products Free delivery on orders over £100 Secure payment available Description body: ductile iron GGG40 liner: EPDM disc: stainless steel AISI316 flange connection: