1-1/4 inch Copper Adapter Fitting x Male

1-1/4” Copper Male Adapter – Solder Cup x MIP for Transition to Threaded Connections

The 1-1/4” copper male adapter is designed to facilitate transitions between soldered copper tube and female-threaded fittings or valves. Featuring a solder cup on one end and a male iron pipe (MIP) thread on the other, this fitting supports installations in potable water, HVAC, and mechanical piping systems where reliable, code-compliant connections are required.

Manufactured from lead-free wrought copper, this adapter complies with ASTM and ANSI standards and is suitable for use in above-ground applications where compatibility with Type L and Type M copper tubing is necessary.

Technical Specifications

• Nominal Size: 1-1/4 inch
• Connection Type: Solder Cup x Male NPT
• Material: Lead-free copper (typically ASTM B75, Alloy C12200)
• Pressure Rating: Up to 200 PSI (varies by system design and application)
• Compliance: NSF/ANSI 61 and 372, ASME B16.22, lead-free certified

Key Functional Attributes

• ✅ Thread-to-Solder Transition – Enables direct connection from copper tubing to threaded valves, fittings, or devices
• ✅ Lead-Free Construction – Approved for potable water systems per national plumbing codes
• ✅ Corrosion Resistance – Copper body withstands common water treatment chemicals and does not promote galvanic corrosion when properly installed
• ✅ Field Proven Durability – Suitable for use in commercial, residential, and institutional pressure systems

Installation Notes

Prepare tubing ends with proper cleaning and flux application prior to soldering. Threads should be sealed with PTFE tape or approved thread sealant suitable for the application. Torque to specification without overtightening. This fitting is not intended for underground use unless protected in accordance with local code.

Common Use Cases

Typically used in domestic water supply systems, hydronic heating lines, and general plumbing installations requiring a secure transition from soldered copper pipe to threaded components such as brass valves, adapters, or system outlets.

Code and Application Note

All copper fittings intended for potable water use must be lead-free, per the U.S. Safe Drinking Water Act and adopted plumbing codes nationwide. This adapter complies with those requirements and is acceptable for use in new construction and replacement work where threaded terminations are required.

The 1-1/4” copper male adapter provides a reliable, mechanically sound connection method in professional-grade piping systems, ensuring performance under standard design pressures and temperatures.