2 inch Copper DWV Reducing Adapter Copper DWV x Fitting Soil

2 inch x 1-1/2 inch Copper DWV Reducing Adapter – Code-Compliant Transition Fitting for Drainage Systems

The 2 inch x 1-1/2 inch Copper DWV Reducing Adapter is engineered to deliver secure transitions between different nominal pipe sizes in non-pressurized drain, waste, and vent systems. Manufactured to comply with ASME and ASTM standards, this adapter supports reliable connections in horizontal and vertical DWV configurations, where copper systems are preferred for their flame-resistant, non-combustible properties.

Fabricated from high-grade wrought copper, the fitting provides excellent resistance to corrosion and scaling commonly encountered in sanitary drainage systems. The bell and spigot-style slip connection allows for soldered joints, ensuring consistent sealing integrity across installations that require long-term performance without the need for mechanical compression or gasketed interfaces.

Advantages of Copper DWV Transition Fittings

• ✅ Dimensional Accuracy – Machined to ANSI/ASME B16.29 and B16.22 tolerances for compatibility with schedule DWV copper tubing
• ✅ Lead-Free Composition – Compliant with Safe Drinking Water Act requirements and applicable lead-free mandates
• ✅ Corrosion Resistance – Copper material offers inherent protection against scale, sediment, and microbial growth
• ✅ Thermal Stability – Suitable for high-temperature waste systems such as laundry stacks, kitchen drains, and mechanical room discharge lines
• ✅ Code-Approved – Listed for use in DWV systems under IPC, UPC, and applicable state plumbing codes

Specifications

• Material: Wrought Copper
• Size: 2 inch x 1-1/2 inch nominal
• Connection Type: Slip x Slip (female solder cup ends)
• Standards: ASME B16.29 / ASTM B75 / NSF 61 (lead-free)

Applications

Commonly used in DWV systems for multi-family housing, commercial buildings, and institutional facilities, this reducing adapter is ideal for converting stack branches and sanitary tees where a change in pipe diameter is required. The copper construction supports quiet operation and superior fire resistance, particularly in penetrations through rated assemblies or confined chase spaces.

Installation Considerations

Installers should ensure pipe ends are properly cleaned, reamed, and fluxed prior to soldering. Use only lead-free solder approved for DWV systems. Maintain joint clearance per manufacturer guidelines to ensure full capillary action during sweat connections. Not suitable for use in pressurized supply or potable water systems.

The 2 inch Copper DWV Reducing Adapter provides a professional-grade solution for ensuring dimensional transitions in gravity-fed waste systems. For contractors working in code-governed projects, this fitting offers the compliance, reliability, and material performance required for modern copper DWV infrastructure.