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The NIBCO h-7-8165wwp is a magnetic filter union connector designed for hydronic and closed-loop piping systems. It combines a union fitting with an integrated magnetic element, allowing technicians to capture ferrous debris circulating in the system fluid without cutting into the main line. The 1-1/4 inch press-by-1-1/2 inch grooved end configuration connects directly between press-fit copper tubing and grooved pipe sections, reducing the need for additional transition adapters. Licensed plumbers and hydronic heating technicians typically install this fitting during new construction or system retrofits where debris management is a service requirement.
This fitting is suited for residential and light commercial hydronic heating and cooling systems, including radiant floor, fan coil, and boiler loop applications. The union design allows the magnetic filter element to be serviced or cleaned in the field without disturbing the surrounding piping. The press-by-grooved connection configuration is particularly useful in mechanical rooms where both copper press and grooved steel or iron pipe runs are present in the same system.
Designed as an OEM-style replacement or new-installation fitting for hydronic piping systems using 1-1/4 inch press copper connections and 1-1/2 inch grooved pipe configurations.
Installation should be performed by a licensed plumber or qualified hydronic technician. Shut off and isolate the system, and relieve pressure before removing or installing the fitting. The press end requires a compatible press tool and jaw set rated for the pipe diameter and material. Grooved end connections must be assembled with an appropriate gasket and coupling per the grooved component manufacturer's instructions and applicable plumbing codes.
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