3/4 inch Copper Adapter Lead-Free Fitting x Female

3/4" Copper Female Adapter – ASTM B75/B88 Compliant Fitting

The 3/4" copper female adapter is a critical component for integrating copper tubing with threaded pipe systems. Fabricated from high-grade, lead-free wrought copper, this adapter delivers consistent performance in potable water supply lines, HVAC piping, and hydronic heating systems.

With a sweat (cup) connection on one end and a threaded female NPT connection on the other, it enables a secure transition from soldered copper to threaded iron or brass components. Engineered to meet industry codes, this fitting ensures long-term integrity under variable temperature and pressure conditions.

Product Advantages

• ✅ Lead-Free Copper Alloy – Conforms to NSF/ANSI 61 and NSF 372 for use in potable water systems
• ✅ Accurate Threading – NPT female threads meet ASME B1.20.1 standard for precise and secure pipe engagement
• ✅ Formed to ASTM B75 and B88 – Ensures compatibility with Type L and M copper tubing
• ✅ Corrosion-Resistant Construction – Excellent for environments with moisture or chemical exposure
• ✅ Mechanical Strength – Withstands elevated temperatures and working pressures in both residential and commercial systems

Technical Specifications

• Size: 3/4 inch nominal
• Material: Wrought Copper, lead-free (≤0.25% Pb)
• Connection: Cup x Female NPT
• Standards: ASTM B75/B88, ASME B16.22, NSF 61/372 certified

Application Scope

This adapter is routinely used in:

• Potable water distribution systems
• Hydronic heating loops
• Commercial plumbing retrofits requiring transition from copper to threaded steel
• Boiler system tie-ins and service connections

Installation Guidelines

Ensure proper surface preparation before soldering; use a compatible flux and heat source per IPC standards. Apply appropriate pipe thread sealant (or PTFE tape) to male threads for leak prevention. Always verify system pressure and temperature limits after installation.

Code Compliance Note

Lead-free fittings like this are required for drinking water systems under the Safe Drinking Water Act amendments (SDWA), making this fitting compliant in all U.S. jurisdictions for potable use.

The 3/4" copper female adapter is an essential part of any copper-to-threaded transition where reliability, code compliance, and system longevity are non-negotiable. Trusted by mechanical and plumbing contractors for use in both new construction and retrofit projects.