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Six-inch ductile iron lug butterfly valve with aluminum bronze disc and gear operator BUNA seat

Legend Valve

Legend Valve 116-666 6" T-367AB-G Butterfly-Buna valve

SKU CH-ZT86-4FSNF

A 6-inch ductile-iron lug butterfly valve with an aluminum-bronze disc, BUNA seat and gear operator for flow control

  • 6-inch ductile iron body handles high-pressure flow
  • Aluminum bronze disc resists corrosion in demanding fluids
  • Buna-N seat provides reliable sealing across temperature range
  • Gear operator enables precise flow control with less effort
  • Lug-style design allows dead-end service without downstream flange

6-Inch Butterfly Valve Overview

The Legend Valve 116-666 is a 6-inch ductile iron lug type butterfly valve designed for flow control in piping systems. It features an aluminum bronze disc and BUNA seat material with a gear operated mechanism. This valve suits industrial and commercial plumbing installations requiring reliable shut-off.

Upgrade From Manual Lever Valves

This model replaces basic lever operated butterfly valves where precise throttling or reduced operating torque is needed. The gear operator provides mechanical advantage for easier actuation on larger diameter lines. The jump is worth it when system pressure or valve size makes manual lever operation impractical or unsafe.

Pre-Installation Checks

Verify that the pipeline flange pattern matches the lug type drilling for proper bolt alignment. Confirm the BUNA seat material is compatible with the intended fluid media and operating temperature range. Ensure adequate clearance exists for the gear operator housing and handwheel rotation in the installed position.

Highlights

  • 6-inch ductile iron body handles high-pressure flow
  • Aluminum bronze disc resists corrosion in demanding fluids
  • Buna-N seat provides reliable sealing across temperature range
  • Gear operator enables precise flow control with less effort
  • Lug-style design allows dead-end service without downstream flange

Specifications

BrandLEGEND VALVE

Questions about this item

What pipe size and flange pattern does the 6-inch lug butterfly valve fit?

The valve is a 6-inch lug type designed to bolt between mating flanges on a 6-inch pipeline.

How is the gear operator mounted and what step is often missed?

The gear operator ships attached; the installer must verify the handwheel turns freely and the valve disc is fully open before bolting the lugs to the flanges.

When should the Buna seat be inspected or replaced?

Inspect the Buna seat whenever the line is depressurised for maintenance; replace it if the elastomer shows cracking, hardening or leakage past the disc.

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