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The BMI USA 35110 is a 2.5-inch black malleable iron pipe union designed for joining and disconnecting threaded pipe sections in plumbing and mechanical systems. Malleable iron construction provides the ductility and strength needed to handle the thermal cycling, vibration, and pressure demands common in commercial and residential piping installations. The black finish indicates this fitting is intended for use in gas distribution, steam, and similar non-potable applications. Licensed plumbers and pipefitters are the primary installers of this fitting type.
This union is suited for 2.5-inch threaded pipe runs in gas supply lines, steam systems, and industrial fluid piping where a serviceable joint is required. The three-piece union design allows technicians to break the connection without cutting pipe, making it a practical choice for equipment drops and sections that require periodic maintenance access.
Designed as an OEM-style threaded fitting for use with 2.5-inch malleable iron or steel pipe systems in gas, steam, and compatible industrial fluid piping applications.
Installation of this fitting should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, IFGC, and ASME B16.3 standards for malleable iron fittings. Shut off and depressurize the line fully before breaking or making any threaded connection. Apply thread sealant rated for the service medium — confirm compatibility with the pipe contents before use. Do not over-tighten threaded connections; use appropriate pipe wrenches and follow standard trade practice for joint makeup.
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