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The BMI USA 20411 is a 3-inch extra heavy black malleable iron pipe tee designed for joining three sections of pipe at a 90-degree branch in pressurized piping systems. Manufactured from extra heavy malleable iron with a black finish, this fitting delivers the wall thickness and structural integrity required in demanding commercial and industrial pipe installations. It is a standard threaded tee fitting installed by licensed plumbers and pipefitters working on gas, steam, water, or air distribution systems where heavier-duty fittings are specified.
This fitting is suited for use in commercial mechanical rooms, industrial process piping, fire suppression systems, and compressed air lines where standard-weight fittings are not adequate for the operating conditions. The extra heavy designation indicates increased wall thickness compared to standard malleable iron tees, making it appropriate for higher-pressure applications. It is commonly installed in new construction and retrofit piping projects requiring a branch connection in a run of 3-inch threaded pipe.
Designed as an OEM-style threaded fitting for use with 3-inch schedule pipe in standard NPT threaded piping systems.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code, or the International Fuel Gas Code where relevant. Shut off and depressurize the piping system completely before removing or installing any fittings. Apply an appropriate thread sealant or PTFE tape to all threaded connections before assembly. Do not overtighten threaded joints; hand-tighten first, then use a pipe wrench to achieve a proper seal without stressing the fitting.
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