Ductile Iron Lugged & Tapped Butterfly Valve Low Torque, NBR Liner

This high-performance lugged and tapped butterfly valve is tailored for systems where durability, minimal installation torque and effective flow control are key. Combining a robust ductile iron body, tapped lug ends for easy installation and a lowtorque actuator or manual lever operation, this valve offers outstanding reliability and efficiency in industrial, water treatment and HVAC applications.

Technical Data:

• Body Material: Epoxycoated ductile iron, designed for strong structural support and corrosion resistance
• End Configuration: Lugged pattern with tapped threaded bolt holes, permits oneside flange removal or retrofit without full deisolation
• Disc Material: 316 stainless steel, offers excellent corrosion resistance and durability in fluid contact
• Liner / Seat Material: NBR (nitrile rubber) liner provides reliable sealing, low friction and suitability for moderate fluid temperatures
• Torque Rating: Lowtorque design reduces actuator size or manual effort needed for operation
• Standards & Certification: Compliant with PED Directive 97/23/EC
• Pressure Rating: PN10 (10bar) nominal
• Temperature Range: 10°C to +100°C (typical for NBR liner service)
• Actuation Mounting: ISO 5211 topmount pad included for straightforward direct mounting of actuators or manual levers
• Sizes Available: From 2 (50mm) up to 8 (200mm) current stock sizes

Key Features:

• The lugged configuration with tapped bolt holes allows installation between flanges and the ability to remove downstream piping without disturbing upstream connections
• Lowtorque engineering means the valve can be easily operated manually or using a smaller actuator, reducing cost and space
• 316 stainless steel disc and NBR liner provide a dependable sealing solution, especially effective in water, chilledwater, HVAC and light industrial fluid systems
• ISO 5211 mount ensures you are actuatorready if future automation is required, no need to swap the valve
• Ductile iron body offers high strength and impact resistance, making it suitable for rugged environments and reliable in demanding service conditions
• Compliant with PED certification ensures suitability for European pressure systems and confidence in installation compliance

Typical Applications:

• HVAC chilled or hotwater loops, where isolation and minimal installation torque are beneficial
• Water treatment or distribution systems requiring valve removal under live feed conditions
• Retrofitted systems in mechanical plant rooms, where actuator upgrade potential is planned
• Industrial applications with moderate pressure and temperature environments needing robust, lowmaintenance butterfly valve solutions