1 inch Copper Cap

1 Inch Copper Cap – Lead-Free Sweat Fitting for Copper Tube Systems

The 1 inch Copper Cap is a solder (sweat) fitting designed to seal the end of a 1 inch nominal copper tube in closed water supply, hydronic heating, or mechanical piping systems. Manufactured from lead-free wrought copper, this cap is engineered to meet stringent code requirements and deliver reliable performance in both residential and commercial applications.

Product Advantages and Applications

• ✅ Lead-Free Copper Alloy Compliant with ANSI/NSF 61 and NSF 372, ensuring safe use in potable water systems per U.S. Safe Drinking Water Act requirements.
• ✅ Formed for Sweat Connection Designed to be installed with soldering methods on Type M, L, or K copper tube using ASTM B813 flux and ASTM B32 solder alloy.
• ✅ Durability in Sealed Systems Withstands continuous working pressures up to 200 psi and service temperatures up to 400°F (when properly soldered).
• ✅ Consistent Fit Manufactured under ASME B16.22 specifications to ensure dimensional uniformity and reliable sealing.

Recommended Installation Practices

This cap should be installed using standard copper tube joining techniques. Ensure tube ends are clean, reamed, and deburred before flux and solder application. Apply uniform heat and allow solder to flow evenly around the joint for full capillary action. Avoid excessive solder buildup. Use caution when capping pressurized or hot lines—system should be depressurized and drained prior to installation.

Technical Specifications

• Nominal Size: 1 inch
• Connection Type: Copper Tube (CTS) sweat fit
• Material: Wrought copper (lead-free)
• Standard: ASME B16.22
• Pressure Rating: 200 psi (non-shock, water/oil)
• Temperature Range: Up to 400°F
• Certifications: NSF/ANSI 61 & 372; complies with lead-free plumbing laws

Common Applications

The 1 inch copper cap is typically used to terminate open copper lines in potable water distribution, radiant heating, chilled water loops, or when isolating lines for future expansion. It is also used in pressure testing segments before fixture installation.

Note:

This fitting is intended for use with soldered copper tubing only. Not for use with PEX, CPVC, or mechanical press systems unless explicitly rated.

For sealed-end terminations in code-compliant systems, the 1 inch Copper Cap provides the reliability, compatibility, and longevity that professional contractors demand. Incorporate it into your piping design with confidence in performance and code adherence.