Ductile Iron Lugged & Tapped Butterfly Valve Low Torque EPDM

This ductile iron lugged and tapped butterfly valve is designed for reliable flow control and smooth operation across a range of industrial, water, and HVAC applications. With a durable ductile iron body, stainless steel disc, and EPDM liner, it delivers excellent sealing performance and reduced operating torque. The low-torque design ensures easier manual handling or smaller actuator requirements, while the lugged and tapped body allows simple one-sided removal for convenient maintenance.

Technical Data

Body Material: Epoxy-coated ductile iron for exceptional strength, toughness, and corrosion resistance.
Disc Material: 316 stainless steel for high durability, corrosion protection, and consistent performance in water and process systems.
Liner/Seat Material: EPDM (Ethylene Propylene Diene Monomer) elastomer, providing a flexible, leak-tight seal ideal for water and many neutral fluids.
End Connections: Lugged and tapped body design suitable for flange standards PN10 or PN16, allowing installation and removal from one side of the pipeline.
Mounting Standard: ISO 5211 top pad for direct actuator or gearbox installation, enabling easy conversion from manual to automated control.
Pressure Rating: PN10 standard, with some sizes available in PN16 upon request.
Temperature Range: 10 °C to +130 °C, suitable for a wide variety of moderate-temperature applications.
Low Torque Design: Engineered disc and liner geometry reduces operating torque, resulting in smoother operation and smaller actuator sizing.
Available Sizes: Commonly available in 2", 2½", 3", 4", 5", 6", and 8" sizes.

Why This Valve Is a Smart Choice

Effortless operation: The low-torque design provides smooth and easy movement, reducing actuator size requirements and manual effort.
Maintenance-friendly: The lugged and tapped design enables the valve to be removed from one side without dismantling the entire flange connection, perfect for quick maintenance or system servicing.
Durable construction: A combination of ductile iron body and stainless steel disc ensures long service life and mechanical reliability, even under demanding conditions.
Reliable sealing: The EPDM liner offers excellent sealing for water and neutral fluids, ensuring leak-free performance with long-term elasticity.
Future-ready: The ISO 5211 top mounting pad supports automation upgrades, allowing the valve to be equipped with electric or pneumatic actuators when needed.

Installation and Application Tips

• Verify that the valves lug pattern and flange standard (PN10/PN16) match your system before installation.
• Use the correct gasket type and apply even bolt torque to ensure a consistent seal and prevent distortion.
• Check fluid compatibility: EPDM is ideal for water, air, and mild chemicals but not suitable for strong acids, oils, or solvents.
• Ensure the pipeline is properly supported and aligned to prevent stress on the valve body.
• When automating, confirm that actuator torque matches the valve size and pressure rating to ensure optimal performance.
• Regularly inspect the liner and disc surfaces for signs of wear, especially in systems with frequent cycling or abrasive media.

The Ductile Iron Lugged & Tapped Butterfly Valve Low Torque EPDM is a strong, versatile solution for modern flow control systems. Combining efficiency, easy maintenance, and robust materials, its an excellent choice for engineers seeking long-term reliability and simplified operation in water, HVAC, and general industrial applications.