1-1/2 inch Copper DWV Reducing Trap Adapter Copper x Slip Joint

1-1/2 Inch Copper DWV Reducing Trap Adapter – Hub x Slip Joint

The 1-1/2" Copper DWV Reducing Trap Adapter is a fitting used in drain, waste, and vent (DWV) systems to transition from copper tubing to a slip joint connection, commonly used with tubular trap assemblies. This adapter reduces the tubing size while integrating a slip joint outlet, allowing for straightforward fixture connections and disassembly for maintenance access.

Performance and Use Characteristics

Designed for use in non-pressurized systems, this reducing trap adapter supports vertical or horizontal transitions between copper DWV piping and standard trap assemblies. The solder end provides a secure joint to copper tubing, while the slip joint outlet accepts common tubular fittings for sinks, lavatories, and similar fixtures.

• ✅ Solder x Slip Joint Design Facilitates a transition from 1-1/2" copper pipe to 1-1/4" or 1-1/2" slip joint tubular connections (depending on configuration).
• ✅ Dezincification-Resistant Copper Manufactured from lead-free, wrought copper alloy (C12200), compliant with modern code requirements.
• ✅ DWV System Compatibility Intended for gravity-flow waste systems, not for use in pressurized or supply lines.
• ✅ Code-Conforming Dimensions Fabricated to meet ASME B16.23 and applicable plumbing code specifications.

Technical Specifications

• Material: Lead-Free Wrought Copper (C12200)
• Nominal Size: 1-1/2 inch
• End Connections: Solder x Slip Joint with Nut and Washer (not always included)
• Application: Copper DWV piping to tubular trap connections
• Standards: ASME B16.23, NSF/ANSI 61 & 372 compliant for lead-free applications

Installation Notes

Install the solder end using standard sweat soldering techniques on properly prepared copper tubing. The slip joint outlet is designed to accept tubular brass or plastic fittings secured by compression nut and washer. Ensure adequate support of piping and observe local code requirements for installation location and cleanout access.

Typical Applications

Used in residential and commercial DWV systems, particularly under sinks or lavatories where a transition between hard-piped copper and serviceable slip joint trap assemblies is required. Commonly installed in kitchen, bathroom, and utility sink layouts.

Regulatory Information

This fitting is manufactured using lead-free materials and is compliant with the Safe Drinking Water Act. While used in non-potable DWV applications, it still adheres to certification requirements for materials safety and is approved under IPC and UPC standards for DWV systems.

The 1-1/2" Copper DWV Reducing Trap Adapter provides a secure and code-compliant method for transitioning from copper drain piping to slip joint tubular traps. Its durable construction, precision sizing, and corrosion-resistant material make it a dependable choice for long-term DWV system performance.