Cast Iron Butterfly Valve DN25, DN40, DN50, DN80 – Reliable Flow Control Valve for Industrial Piping Systems

✅ Cast Iron Butterfly Valves DN25, DN40, DN50, and DN80 are widely used for shut-off and flow regulation in water supply systems, wastewater treatment plants, HVAC installations, fire protection systems, compressed air networks, and various industrial processes. Their compact design, lightweight construction, and simple operation make them an efficient and cost-effective solution for industrial piping systems.

✅ The valve body is manufactured from ductile iron or cast iron with an epoxy coating, providing excellent corrosion resistance, mechanical strength, and long service life in both indoor and outdoor environments. The protective epoxy coating enhances durability against moisture and mild chemical exposure.

✅ The valve disc is commonly made from SS304 stainless steel, SS316 stainless steel, or nickel-coated cast iron, while the resilient seat is available in EPDM, NBR, or PTFE, ensuring excellent sealing performance, smooth operation, and minimal leakage.

✅ Operating with a 90-degree rotating disc, the valve enables quick opening and closing while minimizing pressure loss. The available sizes DN25 (1 inch), DN40 (1-1/2 inch), DN50 (2 inch), and DN80 (3 inch) are ideal for small and medium-sized piping systems across industrial and commercial applications.

✅ These butterfly valves are available with Wafer or Lug connections, compatible with JIS 10K, DIN PN10/PN16, and ANSI Class 150 flange standards. In addition to manual lever handle and gearbox operation, the valves can be fitted with electric or pneumatic actuators for automated process control.

✅ With excellent corrosion resistance, dependable sealing performance, long service life, and economical operation, Cast Iron Butterfly Valves DN25, DN40, DN50, and DN80 are widely used in water treatment facilities, industrial plants, commercial buildings, food processing factories, and modern automation systems.

Technical Specifications

✅ Product Name: Cast Iron Butterfly Valve

✅ Available Sizes: DN25, DN40, DN50, DN80

✅ Equivalent Sizes: 1 Inch, 1-1/2 Inch, 2 Inch, 3 Inch

✅ Body Material: Epoxy-Coated Ductile Iron or Cast Iron

✅ Disc Material: SS304, SS316 Stainless Steel or Nickel-Coated Cast Iron

✅ Stem Material: SS410 or SS420 Stainless Steel

✅ Seat Material: EPDM, NBR, or PTFE

✅ Valve Type: Concentric Butterfly Valve

✅ Rotation Angle: 90°

✅ Connection Type: Wafer or Lug

✅ Flange Standard: JIS 10K, DIN PN10/PN16, or ANSI Class 150

✅ Pressure Rating: PN10, PN16, or Class 150

✅ Operation: Lever Handle, Manual Gearbox, Electric Actuator, or Pneumatic Actuator

✅ Operating Temperature: Depending on Seat Material

✅ Suitable Media: Clean Water, Wastewater, Compressed Air, Oil, Mild Chemicals, and Various Industrial Fluids

Applications

✅ Water Supply Systems

✅ Water Treatment Plants

✅ Wastewater Treatment Facilities

✅ HVAC Systems

✅ Fire Protection Systems

✅ Food Processing Plants

✅ Pharmaceutical Manufacturing

✅ Chemical Processing Plants

✅ Paper Mills

✅ Power Plants

✅ Industrial Facilities

✅ Industrial Piping Systems

Hotline: 0084 787900099