1/2 inch Copper Cap Copper x Copper (Pack of 25)

1/2 inch Copper Cap – Wrought Copper Fitting for Pipe Termination

The 1/2 inch Copper Cap is a sweat fitting designed to terminate copper tube systems in compliance with plumbing and mechanical code requirements. Manufactured from high-purity, lead-free wrought copper (typically ASTM B75 Alloy C12200), this cap is intended for use in pressure and non-pressure systems, including potable water, hydronic heating, and DWV applications.

Performance and Application

This fitting is used to close the end of a copper tube line, providing a permanent or temporary seal. It is commonly installed at service line terminations, pressure test points, or unused branch lines in new construction and retrofit scenarios. The smooth, cylindrical design allows for full insertion over 1/2 inch nominal copper tubing, ensuring a secure soldered or brazed joint.

Key Product Features

• ✅ Material: Wrought Copper (C12200, deoxidized, lead-free)
• ✅ Connection Type: Copper tube size (CTS) sweat/solder
• ✅ Size: 1/2 inch nominal tube (5/8 inch OD)
• ✅ Standards Compliance: ASME B16.22, NSF/ANSI 61 and 372 (lead-free), ASTM B75
• ✅ Use Cases: Water supply lines, HVAC loops, low-pressure steam, and DWV systems

Installation Guidance

Install using standard soldering practices. Clean and deburr pipe ends before applying flux. Use a properly sized torch to ensure even heating of the joint area. Avoid excessive heat that may compromise the fitting or adjacent components. For hydronic and potable systems, always verify compatibility with system pressure and temperature ratings. Follow local code requirements for inspection and testing.

Typical Installations

Used in both residential and commercial systems, this copper cap is suitable for capping off unused stubs during construction, isolating abandoned lines, or creating dead-end branches for future expansion. Also applicable in test systems where pressure retention is required temporarily prior to commissioning.

Material Insight

Wrought copper offers superior thermal conductivity, corrosion resistance, and ease of soldering compared to cast alternatives. The lead-free composition ensures compliance with Safe Drinking Water Act requirements for potable water systems.

The 1/2 inch Copper Cap delivers a reliable, code-compliant seal for terminating copper piping. It is a standard fitting in professional-grade plumbing assemblies and supports both temporary isolation and permanent closure needs in water and mechanical systems.