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The ELKHART PRODUCTS 9004000CB is a cleaned and bagged copper coupling designed for joining copper pipe in plumbing and mechanical piping systems. This reducing coupling connects 4-inch pipe to 2-1/2-inch pipe, making it suitable for branch transitions and system reconfigurations where pipe diameter steps down. The cleaned and bagged packaging keeps the fitting free of oxidation and debris before installation, which supports consistent soldering results. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work on potable water, hydronic heating, and general plumbing distribution systems.
This coupling is used in residential and commercial plumbing applications where a 4-inch-to-2-1/2-inch copper pipe transition is required. Typical install scenarios include main-to-branch reductions in water distribution, recirculation systems, and mechanical room piping. The cleaned and bagged preparation is particularly useful in clean-room or inspection-sensitive environments where fitting contamination is a concern prior to brazing or soldering.
Designed as an OEM-style replacement and new-construction fitting for copper pipe systems using standard 4-inch and 2-1/2-inch nominal copper tube sizes joined by sweat solder or braze methods.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC requirements. Shut off and depressurize the water system and allow all pipe to cool completely before cutting or fitting work begins. Clean all mating pipe ends and flux thoroughly before applying heat to ensure a sound solder joint. Do not overheat the fitting, as excessive heat can damage the copper and compromise joint integrity.
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