FD-M Series Ultra-Low Temperature Butterfly Valve Overview and application The bi-eccentric soft seal butterfly valve is mainly used for wastewater treatment of municipal pipe network, electric circulating water system and industrial wastewater treatment. Technical parameters Nominal diameter: DN100~DN3000 (4"~120") Pressure rating: PN6~PN16 (class 150~300) Working temperature: -20℃~120℃ Connection mode: Flange Materials Valve body: Ductile iron, carbon steel, stainless steel Valve plate: Ductile iron, carbon steel, stainless steel Valve seat: EPDM, NBR FLYGER sales@flyger.co.uk Tricor Suite, 4th Floor, 50 Mark Lane, London EC3R 7QR, United Kingdom