Home / Butterfly Valve 050mm Semi Lugged. Butterfly Valve 050mm Semi Lugged. Add to your Wish List Request a Quote Request a Quote Close Your Name: Contact Email Address: Telephone: Message:  Please enable JavaScript in your browser to send us a message. We are a specialist supplier of standard and bespoke flow control products Rush delivery upon request Secure online payment soon available Description body: ductile iron GGG40 liner: EPDM disc: stainless steel AISI316 flange connection: