1-1/2 inch x 2 inch PVC DWV Reducing Soil Adapter Soil x Plastic

2 inch x 1-1/2 inch PVC Soil Adapter – DWV SXP Transition Fitting

The 2 inch x 1-1/2 inch PVC Soil Adapter is a solvent-welded transition fitting used to connect dissimilar nominal pipe sizes in drain, waste, and vent (DWV) piping systems. This fitting features a spigot x socket configuration (SXP) and is commonly used to reduce a 2 inch soil line down to a 1-1/2 inch branch or fixture connection in vertical or horizontal layouts.

Manufactured from high-impact, non-toxic polyvinyl chloride (PVC), the adapter complies with ASTM D2665 for DWV applications. It is suitable for use in above-ground non-pressurized systems, including branch drain terminations and fixture stub-outs, where pipe size reduction is required to maintain slope and code compliance.

Product Specifications

• Material: PVC (Type I, Grade 1, Cell Class 12454 per ASTM D1784)
• Size: 2 inch spigot x 1-1/2 inch socket
• Fitting Type: Reducing Adapter
• End Connections: Spigot x Socket (solvent weld)
• Application: DWV (Drain, Waste, and Vent)
• Standard Compliance: Conforms to ASTM D2665, CSA B181.2

Installation Requirements

Install using an approved primer and solvent cement in accordance with ASTM D2855. Ensure proper pipe preparation including deburring and cleaning of mating surfaces. Full insertion of the spigot into the mating socket must be confirmed before allowing the joint to cure. This fitting is intended for use in systems where thermal expansion and contraction are accommodated per design specifications.

Typical Applications

This adapter is used in residential and light commercial DWV systems to transition between pipe sizes, particularly in floor-level slab penetrations, fixture branches, and equipment drains. It is suitable for integration with Schedule 40 DWV piping and fittings in accordance with local plumbing code requirements.

Material and Use Notes

PVC DWV fittings provide excellent resistance to common household chemicals, microbial growth, and scaling. They are not intended for use in pressurized systems or where exposure to UV light without protection may occur. For underground installations, ensure all components are properly bedded and supported to prevent shear loading on solvent-welded joints.

The 2 inch x 1-1/2 inch PVC Soil Adapter offers a durable, code-compliant solution for pipe size transitions within gravity-fed drainage systems. Its dimensional accuracy and chemical resistance make it a dependable component for long-term performance in DWV applications.