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Cast iron lug butterfly valve with lever handle

Milwaukee Valve

Milwaukee Valve ML222B 8 Inch Butterfly Valve Lug Buna Liner

SKU CH-7193-4YEWH

An 8-inch lug-style butterfly valve with cast-iron body, ductile-iron disc and Buna-N liner rated for 200 psi water pressure and 10 to 180 °F

  • TypeOther
  • Lug-style body simplifies installation between flanges
  • Cast-iron construction handles 200 psi water pressure
  • Buna-N liner resists wear from 10 to 180 °F
  • Ductile-iron disc adds strength for 8-inch line
  • Eight bolt holes on 11 3/4-inch circle match ABS standard

8-Inch Lug Butterfly Valve

This 8-inch lug-style butterfly valve is built for water distribution systems that require reliable shut-off and flow control. The cast iron body and ductile iron disc handle demanding service conditions, while the Buna-N liner provides compatibility with standard water applications. It suits plant engineers and maintenance crews who need a robust quarter-turn valve for horizontal or vertical piping.

Thermals noise and power draw

The valve operates within a temperature range of 10 to 180 degrees Fahrenheit and withstands a maximum water pressure of 200 psi. As a manually operated quarter-turn device, it consumes no electrical power and generates no operational noise. The lever handle allows direct mechanical control without actuators, solenoids, or external energy sources.

Build quality and connections

The cast iron body uses eight bolt holes on an 11 3/4-inch bolt circle with 3/4-10 lug threads for secure flange mounting. This lug pattern permits dead-end service and downstream piping removal without disturbing the upstream connection. The ductile iron disc and Buna-N liner combine mechanical strength with chemical resistance for extended service life in municipal and industrial water lines.

Highlights

  • Lug-style body simplifies installation between flanges
  • Cast-iron construction handles 200 psi water pressure
  • Buna-N liner resists wear from 10 to 180 °F
  • Ductile-iron disc adds strength for 8-inch line
  • Eight bolt holes on 11 3/4-inch circle match ABS standard

Specifications

BrandMILWAUKEE VALVE
TypeOther

Questions about this item

How do I bolt the lug-style valve to the flange and which step is often missed?

Align the eight lug holes on the 11 3/4 in bolt circle with the mating flange, insert 3/4-10 bolts through each lug, and torque them in a star pattern; the step often missed is using a full gasket between the Buna-N liner and the flange face to prevent leakage.

Which component will need replacement first and at what interval?

The Buna-N liner is the primary wear item; plan to inspect it annually and replace it when the material hardens or shows cracking, typically after several years of service in water between 10 and 180 degrees F.

What pressure or temperature limit will be reached first during continuous operation?

The 200 psi maximum water pressure rating is the first hard limit; sustained pressure above this value can deform the cast-iron body or unseat the ductile-iron disc before the 180 degrees F temperature ceiling becomes a factor.

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