1-1/2 inch PVC DWV Trap Adapter Plastic x Slip Joint

1-1/2 inch PVC Trap Adapter – Designed for Secure DWV Connections

The 1-1/2 inch PVC Trap Adapter is a key component in drain, waste, and vent (DWV) systems, engineered to transition between a solvent-weld hub connection and a mechanical slip-joint connection. This fitting enables efficient installation of trap arms to branch drain lines, particularly under sinks and lavatories where access and alignment flexibility are critical.

Constructed from durable white PVC, this adapter resists corrosion, chemical degradation, and impact. Its design ensures long-term service life in residential and light commercial applications. The solvent weld hub provides a permanent connection to PVC DWV piping, while the slip-joint outlet—typically used with a compression nut and washer—allows for disassembly and maintenance access when needed.

Key Performance Features

• ✅ Solvent Weld Hub x Slip Joint Facilitates transition from permanent piping to serviceable trap connections.
• ✅ Impact-Resistant PVC Manufactured to handle structural loads and thermal expansion without cracking or failure.
• ✅ Code-Compliant Fit Conforms to ASTM D2665 and D3311 for DWV systems.

Technical Specifications

• Size: 1-1/2 inch nominal
• Material: PVC Type I, Grade 1 per ASTM D1784
• End Connections: Hub (solvent weld) x Slip Joint (with nut and washer)
• Standard Compliance: ASTM D2665, NSF/ANSI Standard 14
• Maximum Service Temp: 140°F (60°C)

Installation Guidance

For optimal performance, solvent weld joints must be prepared using a primer and solvent cement compatible with PVC materials. The slip-joint end should be assembled with a properly sized plastic or rubber washer and compression nut. Ensure alignment and torque are correct to avoid overtightening, which can damage threads or washers. This fitting is intended for non-pressurized DWV use only.

Application Use

Typical installations include under-sink and lavatory connections where trap assemblies must be removable for access. The 1-1/2 inch size is standard for residential branch drains and aligns with common fixture tailpieces. Also used during remodels or maintenance replacements where a serviceable interface is necessary.

Did You Know?

Slip-joint adapters allow trap assemblies to be removed without cutting pipe—an essential feature for routine drain cleaning or fixture replacement.

The 1-1/2 inch PVC Trap Adapter is a reliable, code-compliant solution for DWV system transitions requiring both permanent and accessible joints. Its robust construction and dimensional accuracy make it a trusted choice for professionals working in high-traffic residential and light commercial environments.