1/2 inch Copper Adapter Fitting x Female

1/2 Inch Copper Adapter – Solder x Female NPT for Potable Water and Hydronic Systems

The 1/2 inch Copper Adapter Fitting (Sweat x FNPT) is a transition fitting used to connect copper tubing to threaded pipe or components. Commonly specified in domestic water and heating systems, this fitting allows for a secure soldered connection on one end and a female-threaded connection on the other. It is suitable for both residential and commercial installations where a copper-to-threaded transition is required.

Manufactured from lead-free wrought copper alloy, this adapter conforms to current health and safety regulations for potable water systems. The design supports thermal expansion and pressure demands associated with plumbing and hydronic applications.

Key Product Attributes

• ✅ Connection Type: Copper Cup (Solder) x FNPT – Enables direct joining of copper pipe to male-threaded valves or fittings.
• ✅ Material: Lead-Free Copper – Compliant with NSF/ANSI 61 and 372 for use in potable water distribution.
• ✅ Temperature & Pressure Tolerant: Rated for standard system pressures and temperatures up to 400°F when properly soldered with lead-free alloys.
• ✅ ASME-Compliant Threads: Female threads machined to ANSI/ASME B1.20.1 specifications for reliable fit and sealing with compatible components.

Installation Guidelines

Prepare copper pipe by cutting square and cleaning the outside diameter. Use approved lead-free solder and flux for the solder joint. Apply PTFE tape or thread sealant to the male thread before tightening into the FNPT side. Avoid excessive torque to prevent damage to threads or joint distortion. Allow soldered joints to cool naturally before pressurizing.

Common Applications

This adapter is typically installed in potable water supply systems, boiler feeds, water heater connections, and hydronic loop transitions. It is ideal for field-built piping assemblies requiring copper-to-threaded transitions in confined or high-service areas.

Code and Compliance Information

Manufactured to meet ASME B16.18 and B16.22 dimensional and material standards. Certified lead-free per the Reduction of Lead in Drinking Water Act. Acceptable for use in systems governed by IPC, UPC, and local codes requiring NSF/ANSI-certified fittings.

Technical Specifications

• Material: Wrought Copper, Lead-Free
• Size: 1/2 inch nominal
• Connection Type: Solder x Female NPT
• Standards: ASME B16.18, NSF/ANSI 61, NSF/ANSI 372

The 1/2 inch Copper Adapter (Solder x Female NPT) offers a durable and code-compliant method for connecting copper tubing to threaded system components. It is a reliable solution for professionals working in potable water, HVAC, and hydronic distribution systems requiring long-term joint integrity.