3 inch ABS DWV Cap

3 inch ABS DWV Cap – For Termination of Drain, Waste, and Vent Lines

The 3 inch ABS DWV Cap is a solvent-weld fitting designed to permanently seal the end of 3-inch ABS drain, waste, and vent piping. Used in non-pressurized systems, this cap provides a mechanical barrier to prevent the ingress or egress of air, gases, or fluids at termination points or during rough-in phases.

Manufactured from black ABS (Acrylonitrile Butadiene Styrene), the cap offers rigidity, chemical resistance, and dimensional stability. It is commonly used to seal off unused branches or prepare systems for future connections during phased construction or pressure testing.

Performance Characteristics

• ✅ Precision Fit: Engineered for uniform socket engagement and solvent bonding.
• ✅ High Impact Resistance: Suitable for jobsite conditions and long-term durability in buried or exposed locations.
• ✅ Lightweight and Rigid: Allows for ease of handling without compromising structural performance.
• ✅ Non-Corrosive: Will not degrade from exposure to typical DWV system contents.

Technical Specifications

• Material: ABS (Acrylonitrile Butadiene Styrene)
• Nominal Size: 3 inches
• Connection Type: Hub (Slip-fit for solvent weld)
• Standards: Conforms to ASTM D2661 and CSA B181.1 for DWV applications

Installation Notes

Install using approved ABS solvent cement. Clean and dry the mating surfaces, apply cement uniformly, and seat the cap fully to the socket shoulder. Allow for proper curing time in accordance with local code and manufacturer recommendations. Intended for gravity systems only—do not use in pressurized applications.

Typical Use Cases

This fitting is standard in residential and light commercial DWV systems for sealing vent terminations, cleanout access points, or unused branches. It is also used temporarily to cap lines during hydrostatic or air pressure testing before fixture connection or occupancy.

Material Insight

ABS remains a preferred material in DWV piping due to its consistent performance across temperature ranges, impact resilience, and ease of fabrication. It is especially advantageous in systems requiring fast, solvent-weld installation with no primer requirement.

The 3 inch ABS DWV Cap supports compliant system construction and long-term performance. Ideal for rough-in, final termination, or future branch isolation in accordance with plumbing code requirements.