1-1/2 inch Poly Test Cap Insert

1-1/2" Polyethylene Test Cap Insert – Non-Threaded, Push Fit

The 1-1/2 inch Poly Test Cap Insert is a non-permanent, push-in cap designed for sealing the ends of DWV (drain, waste, and vent) piping during system pressure testing or inspection. Made from high-density polyethylene (HDPE), this test cap provides a friction-fit seal to temporarily close off open hubs or pipe ends in PVC or ABS systems without the need for solvent cement.

Application-Specific Performance

This fitting is engineered for use in temporary plumbing system closures and diagnostic testing. Commonly installed during rough-in stages, it enables quick pressurization of drainage lines to check for leakage or joint failure. Key product characteristics include:

• ✅ Flexible Compression Seal: Expands slightly inside the pipe bore for tight retention during testing procedures.
• ✅ HDPE Construction: Resists cracking under pressure, impact, or low temperatures common to job site conditions.
• ✅ Tool-Free Installation: Push-fit design eliminates the need for adhesives, clamps, or mechanical fasteners.
• ✅ Test-Ready: Rated for standard hydrostatic or air pressure test ranges required by plumbing inspection protocols.

Technical Specifications

• Size: 1-1/2 inch nominal pipe diameter
• Material: Polyethylene (non-toxic, lead-free)
• Connection Type: Insert (push-fit, non-threaded)
• Use Case: Temporary closure of pipe ends for testing, isolation, or staging

Installation Guidelines

To install, insert the cap fully into a clean and debris-free pipe end until it bottoms out. Confirm the fit is secure before initiating pressure testing. After testing, remove the cap manually or by cutting it out if permanently sealed by pressure. Do not solvent-weld or thread into this cap, as it is intended for temporary use only.

Typical Job Site Use

Poly test caps are frequently used in residential, commercial, and municipal plumbing systems where segments of the drainage system must be sealed during inspection or phased construction. Compatible with both horizontal and vertical DWV configurations.

Regulatory Compliance

This test cap is manufactured from lead-free polyethylene and meets requirements for use in potable and non-potable plumbing applications. It is suitable for use in systems subject to IAPMO, UPC, and IPC testing standards when installed per code.

The 1-1/2" Poly Test Cap Insert provides an efficient, cost-effective method for temporarily sealing drainage lines. Its durable design and quick installation make it a standard component on jobs requiring code-compliant pressure verification.