Oatey 33400 Test Plug 1-1/2 Inch Plastic Red

Product Description

The OATEY 33400 is a mechanical test plug designed to temporarily seal open-ended piping during rough-in, inspection, or system testing. Made from plastic and rated for a maximum air pressure of 5 psi, it provides a secure closure that prevents dirt, dust, and debris from entering open pipe ends. The red color makes it easy to identify and locate before final system commissioning. Licensed plumbers and pipefitters typically use this plug during new construction and remodel work to protect piping until final connections are made.

This plug fits 1-1/2 inch pipe connections and is suited for use in residential and light commercial plumbing applications. It is commonly installed in drain, waste, and vent piping systems during rough-in inspections where the system must hold a pressure test. The plug is removed before final trim-out and system startup. Its plastic construction keeps weight low and resists corrosion from moisture exposure in wet environments.

Key Features

• Rated for maximum 5 psi air pressure for safe pressure testing
• Plastic construction resists corrosion and moisture
• Red color allows quick visual identification on the job
• Fits 1-1/2 inch pipe connections for standard DWV applications
• Blocks dirt, dust, and debris from entering open pipe ends

Compatibility

Designed as an OEM-style mechanical plug for 1-1/2 inch pipe end connections in residential and commercial plumbing and drain, waste, and vent piping systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter. Before installing or removing the test plug, confirm that system pressure is fully relieved and the line is depressurized. Do not exceed the 5 psi maximum air pressure rating during testing. Remove all test plugs and verify their absence before closing walls or completing final inspections per applicable plumbing code requirements.

Technical Specifications

• Connection Size: 1-1/2 inches
• Material: Plastic
• Color: Red
• Maximum Air Pressure: 5 psi
• Country of Origin: United States

Standard Information

• Brand: OATEY
• Manufacturer Part Number: 33400