Lugged & Tapped Butterfly Valve Stainless Steel Disc, NBR (Buna) Liner

Introducing a robust valve engineered for reliable performance in demanding fluid handling applications. This lugged and tapped butterfly valve features a ductile iron body, stainless steel disc, and a nitrile (Buna N) liner, offering durability, corrosion resistance, and consistent sealing. Ideal for systems requiring a compact, high flow solution with secure mounting and lever or gearbox operation.

Technical Highlights

Body: Epoxy coated ductile iron, designed for durability and protection against environmental factors.
Disc: Precision machined 316 stainless steel, offering excellent corrosion resistance and stability across a range of media.
Liner: NBR (Buna N) elastomer liner that provides effective sealing and is well suited for oils, water, and general industrial fluids.
Mounting: Complies with ISO 5211 for direct actuator mounting, simplifying automation and interchangeability.
Operation:

• Lever (locking) operation available for sizes 1½ to 12
• Gearbox operation available for sizes 14 to 24 (enquire for availability)
  Pressure Rating (PN):
• PN16 for sizes 1½ to 12
• PN10 for sizes 14 to 24
  Temperature Range: Suitable for service temperatures from 10 °C up to +80 °C.
  Flange Compatibility:
• Sizes 1½ to 6 fit PN10/16 flanges
• Sizes 8 to 24 fit PN16 flanges
  Compliance: Meets the requirements of the PED Directive 97/23/EC.
  Product Code / MPN: V991408EX from the Brandoni range.

Why This Valve Stands Out

Versatility: With sizes ranging from 1½ up to 24 with appropriate operation options, you can standardize across various line diameters using the same design concept.
Reliability: The combination of ductile iron body and 316 stainless steel disc gives you strength and corrosion resistance where it matters. The NBR liner ensures a resilient seal against many common fluids.
Ease of Automation: ISO 5211 compliance means easier mounting of actuators or automated gearboxes when you need to move beyond manual lever operation.
Straightforward Installation: Lugged and tapped design allows you to mount the valve between flanges and also tap it (secure bolts from one side), helpful for retrofit and maintenance scenarios.
Service Ready: With a wide operating temperature range and moderate pressure ratings, its suited for water systems, general industrial fluids, HVAC, and many other medium duty applications.

Installation and Application Tips

• Confirm the flange standard (PN10 vs PN16) matches your line size: for sizes 1½6, it supports PN10/16; for 824 expect PN16.
• Ensure actuator or gearbox compatibility via the ISO 5211 pad if automating.
• When selecting liner material, ensure your fluid is compatible with NBR/Buna N aggressive chemicals, solvents, or high temperatures may require a different elastomer.
• For critical systems subject to pulsing or thermal cycling, consider the valves service temperature limit of +80 °C and assess if softer or more robust liners are needed.
• When retrofitting, the tapped lug design allows flange blanket bolting without needing to pass bolts completely through flanges useful in legacy installations.

This butterfly valve offers a balanced mix of durability, flexibility, and installation convenience a solid choice for industrial fluid control applications where reliability and low maintenance operation are key. If you need custom actuation or alternative liner materials, these options can often be accommodated by special order.