2 inch x 1-1/2 inch ABS DWV Flush Bushing Fitting x Plastic

2” x 1-1/2” ABS DWV Flush Bushing – Transition Fitting for Drainage System Adaptation

The 2” x 1-1/2” ABS DWV Flush Bushing is designed to facilitate size reduction in drain, waste, and vent (DWV) systems while maintaining consistent wall alignment. Its flush profile supports compact installation layouts, allowing for direct coupling in vertical or horizontal runs where space is limited.

This bushing is molded from impact-resistant ABS and manufactured to industry-standard tolerances, ensuring dimensional consistency and tight solvent-weld joints. Its primary function is to reduce a 2-inch hub to accept 1-1/2-inch pipe, commonly required when transitioning between fixture branch lines and larger main stacks.

Component Attributes

• ✅ Solvent Weld Configuration – Designed for use in non-pressurized DWV systems where permanent bonding is required.
• ✅ Code-Conforming Geometry – Flush insertion provides minimal obstruction, supporting smooth interior transitions to reduce flow disruption.
• ✅ Impact-Resistant ABS – Thermoplastic resin construction resists cracking and deformation under typical DWV loads and installation handling.
• ✅ Precision Molded – Tolerances align with ASTM D2661 for consistent fit within Schedule 40 DWV system components.
• ✅ Lightweight Material – Reduces installation strain without compromising rigidity or support at junctions.

Installation Considerations

Install using appropriate primer (if required by local code) and ABS solvent cement. Ensure full insertion depth and alignment with adjoining pipe sections to prevent internal lip or offset. Not intended for use in pressure applications. For retrofit conditions, verify compatibility with surrounding pipe schedule and sizing before assembly.

Typical Applications

Commonly used in residential and multi-family construction for reducing pipe sizes at fixture branches, lavatory drains, and appliance stub-outs. Especially useful in confined areas such as wall cavities or under-slab installations where clearance is limited and stack reduction must be performed without added fittings.

Material Properties

ABS offers high tensile strength-to-weight ratio and maintains dimensional stability across typical DWV temperature ranges. Its resistance to corrosion, chemical degradation, and UV exposure (in certain above-grade settings) makes it a preferred option for long-term drainage performance.

Specification Summary

• Material: Acrylonitrile Butadiene Styrene (ABS)
• Size: 2” hub x 1-1/2” spigot
• Use: Drain-Waste-Vent (non-pressurized) systems
• Standard: Conforms to ASTM D2661 / CSA B181.1

This DWV flush bushing supports efficient layout execution in code-regulated plumbing systems. It is engineered for integration into solvent-welded assemblies requiring a reduction in pipe diameter without sacrificing structural or flow integrity.