2 inch Poly Test Cap Insert

2" Poly Test Cap Insert – Pressure-Rated Temporary Seal for DWV Systems

The 2 inch poly test cap insert is designed for sealing open pipe ends in non-pressurized drainage, waste, and vent (DWV) systems during rough-in testing. Manufactured from durable thermoplastic, it provides a secure friction-fit seal that resists displacement under system pressure during hydrostatic or air testing.

Application-Specific Performance

This cap is engineered to meet the demands of jobsite pressure testing protocols, providing a temporary yet reliable closure point within PVC or ABS systems. Key performance features include:

• ✅ One-Piece Poly Construction Molded from high-strength plastic for resistance to deformation and chemical exposure common to DWV applications.
• ✅ Friction Fit Design Insert-style cap seats securely inside pipe bore for a watertight seal during testing cycles.
• ✅ Pressure-Ready Suitable for short-duration pressure testing per IPC and UPC standards when properly installed.
• ✅ Corrosion-Resistant Polymeric material will not corrode or degrade in contact with wastewater or jobsite moisture.

Specifications

• Material: Injection-molded polyethylene or polypropylene
• Nominal Size: 2 inches
• Connection Type: Insert (friction fit into pipe I.D.)
• Intended Use: Temporary test seal for DWV lines
• Compliance: Meets relevant plumbing code standards for DWV test components

Installation Guidelines

• Ensure the pipe interior is clean and free of burrs before insertion.
• Insert cap squarely and fully into the pipe socket to achieve a uniform seal.
• Verify system test pressure limits prior to use; avoid excessive pressure or prolonged duration beyond code requirements.
• Cap is intended for removal after test; do not use as a permanent seal or in pressurized water supply systems.

Use Cases

Commonly installed during residential or commercial new construction, this test cap is used to seal DWV pipe segments during hydrostatic or pneumatic inspection phases. Suitable for vertical stacks, horizontal branches, or cleanout access points during testing procedures.

Material Insight

Poly test caps offer lightweight, impact-resistant alternatives to metal plugs or solvent-weld closures. Their ease of installation and non-corrosive properties make them well-suited for fast-paced construction environments.

The 2" poly test cap insert provides a practical and code-compliant method for verifying system integrity during rough-in inspection phases. Built for reliability under test conditions, it ensures consistent performance across a wide range of DWV installations.