Watts Radiant 81008102 Radiantpex-al Adapter 5/8 X 3/4 Inches Compression X Female C

Product Description

The WATTS RADIANT 81008102 is a RadiantPEX-AL adapter fitting designed to connect 5/8 inch PEX-AL-PEX tubing to 3/4 inch female threaded copper or brass fittings. This adapter uses a compression end on one side and a female C (copper sweat or compression-style female) connection on the other. It provides a reliable, leak-resistant joint in radiant heating and plumbing distribution systems. HVAC installers, plumbing contractors, and radiant floor heating technicians use this type of fitting when transitioning between PEX-AL-PEX multilayer pipe and standard copper or brass components. PEX-AL-PEX tubing is widely used in hydronic radiant heating systems, domestic hot and cold water distribution, and snowmelt applications. The aluminum core layer gives this tubing dimensional stability and oxygen barrier properties, making it well suited for closed-loop heating circuits. Adapter fittings like the 81008102 are essential when tying radiant tubing runs into manifolds, boiler connections, or supply and return headers that use threaded or compression-style copper fittings. The compression end grips the outer surface of the multilayer tubing securely without the need for crimping tools, simplifying field installation. This fitting is an imported product manufactured to meet the performance demands of residential and light commercial radiant heating projects. Proper sizing is critical when selecting adapters. This fitting transitions a 5/8 inch nominal tubing outside diameter to a 3/4 inch female connection, a common size pairing in radiant system design. Whether roughing in a new hydronic system or making a repair connection on an existing installation, this adapter delivers a consistent, dependable joint that holds up under normal operating pressures and temperatures found in radiant heating applications.

• Transitions 5/8 inch PEX-AL-PEX tubing to a 3/4 inch female C connection for radiant and plumbing systems
• Compression end style requires no crimping tools and provides a secure, leak-resistant grip on multilayer tubing
• Designed for use in hydronic radiant heating, domestic water distribution, and closed-loop heating circuits

Product Highlights

The WATTS RADIANT 81008102 adapter provides a straightforward, tool-friendly connection between 5/8 inch PEX-AL-PEX tubing and 3/4 inch female fittings, making it a reliable choice for radiant heating and plumbing transition points.

Product Information

Standard Information

• Brand: WATTS RADIANT
• Manufacturer Part Number: 81008102

Technical Specifications

• Nominal Size: 5/8 x 3/4 inches
• End Style: Compression x Female C
• Origin: Import