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The ASC ENGINEERED SOLUTIONS 1BXE.BB is a hex head pipe bushing used to reduce a larger threaded pipe opening to a smaller one within a piping system. It features a 1-1/4 inch male NPT (MNPT) outer thread and a 3/4 inch female NPT (FNPT) inner thread, allowing a smooth transition between two common pipe sizes. Rated at 125 lb, this bushing is cast from black cast iron and is domestically produced. It is installed by licensed plumbers and pipefitters in gas, water, and steam distribution lines where a threaded reducing connection is required.
This bushing suits residential and light commercial piping applications. It is commonly used in gas distribution, hydronic heating systems, compressed air lines, and general water service where a 1-1/4 inch pipe run must transition down to a 3/4 inch branch or fitting. The hex head profile allows a wrench to be seated securely during installation, making it suitable for tight spaces and high-torque makeup connections.
Designed as an OEM-style replacement or new-installation fitting compatible with standard 1-1/4 inch and 3/4 inch NPT threaded piping systems.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC) where relevant. Shut off and depressurize the line before fitting removal or installation. Apply an approved thread sealant or PTFE tape to the male threads before makeup. Do not over-tighten cast iron fittings, as the material is not forgiving of stress cracking.
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