Ductile Iron Butterfly Valves: Introduction & Technical Parameters

Ductile Iron Butterfly Valves refer to a type of butterfly valve where the valve body is made of cast iron or ductile iron, with rubber or PTFE sealing. The closing part (valve clack or butterfly disc) is a disc that rotates around the valve shaft to achieve opening and closing. They are mainly used for cutting off and throttling on pipelines. Ductile Iron Butterfly Valves feature small size, light weight, compact structure, quick opening, reliable sealing performance, easy and labor-saving operation, long service life and convenient maintenance. The sealing ring is made of natural rubber, and the valve body adopts carbon steel surfacing with stainless steel, which has the advantage of reliable sealing.

Technical Parameters

• Nominal Diameter: DN40 - 2000

• Pressure Range: 1.6Mpa - 6.4Mpa; 150LB - 600LB

• Operating Temperature: -40℃ - 600℃

• Actuation Methods: Lever type, Worm gear type, Electric Actuated, Pneumatic

• Valve Body Material: Cast iron, Ductile iron

• Sealing Material: Natural Rubber (NR) - 20~+85℃; Ethylene Propylene Diene Monomer (EPDM) - 40~+125℃; Nitrile Butadiene Rubber (NBR) - 20~+82℃; Silicone Rubber (SI) - 70~+150℃; Fluororubber (FPM) - 23~+150℃; Chloroprene Rubber (CR) 0~+80℃; Butyl Rubber (IIR) - 40~+100℃; Polytetrafluoroethylene (PTFE) +10~+150℃

• Applicable Medium: Fresh water, sewage, seawater, air, steam, food, medicine, various oils, acids, alkalis, salts, etc.