1 inch Copper Union Copper x Copper

1 Inch Copper Union – Sweat x Sweat (Copper x Copper)

The 1 inch Copper Union (Copper x Copper) is a mechanical fitting used to join two sections of copper tubing with the ability to disassemble the joint without cutting pipe. It features sweat (solder) connections on both ends, designed for use with Type K, L, or M copper tubing in pressure-rated systems.

Material and Compliance

Manufactured from lead-free copper alloy, this union is designed for use in potable water systems and complies with applicable codes and certifications for drinking water safety. The union nut assembly allows for serviceability and future component replacement without disturbing adjoining pipe sections.

• ✅ Material: Lead-free copper alloy (compliant with NSF/ANSI 61 and 372)
• ✅ Connection Type: 1 inch sweat x sweat (solder joint)
• ✅ Pressure Rating: Typically up to 200 PSI (verify per system design and solder method)
• ✅ Temperature Rating: Suitable for systems up to 250°F

Application Use

This union fitting is used in hot and cold potable water lines, hydronic heating systems, and mechanical piping where future access to components is required. Common installations include water heaters, mixing valves, boiler connections, and serviceable risers in both residential and commercial systems.

Installation Guidelines

Pipe ends should be cleaned and fluxed prior to insertion. Use lead-free solder suitable for potable water systems. After joining the copper ends, tighten the union nut using an appropriate wrench. Ensure alignment is maintained during assembly to prevent thread binding or gasket displacement.

• ✅ Joint Method: Soldered connections with mechanical union seal
• ✅ Seal Type: Flat or conical gasket (varies by model)
• ✅ Disassembly: Threaded nut allows for future removal without cutting pipe

Performance Characteristics

• ✅ Corrosion Resistance: Copper alloy resists internal scaling and external oxidation
• ✅ Serviceability: Allows future access or component replacement in closed systems
• ✅ Code Compliant: Approved for use in potable water and mechanical piping per IPC and UPC

The 1 inch Copper Union (Sweat x Sweat) is a serviceable, code-compliant solution for joining copper piping in plumbing and mechanical systems. Its durable construction and mechanical joint design allow for ease of maintenance and consistent system performance under typical service conditions.