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The PRECISION HYDRONICS PHP-125018750-4 is an 18-outlet copper zone header designed for hydronic heating distribution systems. Measuring 1-1/4 inches in diameter by 72 inches in length, this manifold serves as the central distribution point for hot water flow across multiple heating zones. The 3/4-inch branch outlets accommodate standard hydronic zone connections, and the plain end connections allow for flexible field termination by the installing technician. Licensed plumbers and hydronic heating contractors install this type of header in both residential and light commercial radiant and baseboard heating systems.
This copper zone header is suited for multi-zone hydronic systems where a single supply or return manifold must serve a large number of circuits simultaneously. With 18 outlets, it is well matched to larger residential installations or small commercial hydronic layouts that require centralized zone distribution. The 72-inch overall length provides adequate spacing between outlets to simplify zone valve or pump connection during rough-in. Plain end connections give the installer the option to solder, press, or adapt to the existing piping configuration on site.
Designed as an OEM-style replacement or new-installation manifold for multi-zone residential and light commercial hydronic heating systems using standard copper piping.
Installation should be performed by a licensed plumber or hydronic heating contractor in accordance with applicable local mechanical and plumbing codes. Shut off system water supply and relieve pressure before cutting into existing piping or connecting the header. Plain end connections require proper soldering technique or approved press-fit tooling to ensure leak-free joints. Support the header at appropriate intervals per manufacturer and code requirements to prevent stress on branch connections.
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