1-1/4 inch Copper DWV Test Cap

1-1/4” Copper DWV Test Cap – Designed for Performance and Compliance

The 1-1/4” Copper DWV Test Cap is engineered for use in drain, waste, and vent systems where temporary sealing is necessary during pressure testing. This fitting provides a secure termination point that helps validate system integrity before final commissioning.

Professional-Grade Construction

• ✅ Formed Copper Body Fabricated from wrought copper for durability and dimensional consistency.
• ✅ Lead-Free Material Manufactured in compliance with lead-free standards as required by plumbing codes in all 50 states.
• ✅ DWV Rated Designed for non-pressurized, gravity-flow applications in residential and commercial DWV systems.
• ✅ Thermal Compatibility Compatible with standard soldering and brazing processes used in copper installations.

Technical Specifications

• Material: Copper
• Nominal Size: 1-1/4 inch
• Type: Test Cap
• System Use: DWV (Drain, Waste, Vent only – not for pressurized systems)
• Compliance: ASTM B75, NSF/ANSI 61-G, and applicable plumbing code requirements

Installation Notes

Installation requires standard copper soldering methods. The test cap should be properly cleaned, fluxed, and soldered in place using a torch and compatible filler metal. For air or water pressure tests, the cap allows temporary containment and is typically removed or cut post-inspection.

Common Applications

This cap is typically installed at the terminal point of a branch line or system riser during DWV pressure testing. It is also used in horizontal runs to isolate system sections prior to inspection.

Did You Know?

Unlike fittings intended for pressurized supply systems, DWV copper components are thinner-walled and identified by their size and end configuration—ensuring they are properly matched to system requirements and local jurisdictional codes.

The 1-1/4” Copper DWV Test Cap offers the consistency and reliability professionals expect on job sites. Use it to ensure code-compliant testing and inspection readiness in every DWV installation.