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Four inch ductile iron wafer butterfly valve with aluminum bronze disc and ten position lever handle

Legend Valve

Legend Valve 116-424 4" T-337AB Butterfly Valve BUNA

SKU CH-2XM4-Y5KXC

A 4-inch ductile iron wafer butterfly valve with an aluminium bronze disc, BUNA seat and 10-position lever handle

  • 4-inch ductile iron wafer body fits standard flanges
  • Aluminium bronze disc resists corrosion in water systems
  • BUNA seat handles common fluid temperatures
  • 10-position lever handle gives precise flow control
  • California Proposition 65 warning for cancer and reproductive harm

4" Butterfly Valve BUNA

The Legend Valve 116-424 is a ductile iron wafer butterfly valve with an aluminum bronze disc and BUNA seat. It uses a 10 position lever handle for flow regulation in plumbing systems. This new valve suits installers needing a quarter-turn shut-off for compatible piping.

Replaces worn wafer valves

Swap this unit in when an existing wafer butterfly valve leaks or the disc corrodes. The jump is worth it if the line size matches the 4 inch nominal dimension and the media is compatible with BUNA seating. California Proposition 65 warnings apply for chemical exposure.

Wafer install between flanges

Installation requires centering the wafer body between two pipe flanges with a gasket on each face. Bolts pass through the surrounding flange holes to compress the assembly evenly. Misaligned flanges or uneven bolt torque often cause seat distortion and leaks.

Highlights

  • 4-inch ductile iron wafer body fits standard flanges
  • Aluminium bronze disc resists corrosion in water systems
  • BUNA seat handles common fluid temperatures
  • 10-position lever handle gives precise flow control
  • California Proposition 65 warning for cancer and reproductive harm

Specifications

BrandLEGEND VALVE

Questions about this item

What pipe size and flange standard does the 4" T-337AB wafer butterfly valve require for mounting?

The valve is a 4-inch wafer body designed to fit between standard flanges; bolt pattern and pressure class must match the piping system.

How is the 10-position lever handle installed, and what is the common alignment mistake?

The handle mounts on the valve stem and locks into one of ten notches; the frequent error is leaving the handle between detents, which prevents a full seal.

When should the BUNA seat be inspected or replaced in this ductile iron butterfly valve?

Inspect the BUNA seat during routine system checks; replace it if swelling, cracking, or leakage appears, especially after exposure to hydrocarbons or high temperatures.

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