5 Loop Radiant Heat PEX Manifold Set, Pex Manifold with 1/2" PEX Tubing for Hydronic Radiant Floor Heating Stainless Steel. The main pipe and inlet/outlet valves are 1" NPT thread, adapter 1/2", suitable for 12MM ID 16MM OD PERT PEXD and other underfloor heating pipes.
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