Oatey 238348 Dual Test Cap 3 X 4 Inch

Product Description

The OATEY 238348 is a dual test cap designed for pressure testing drain, waste, and vent (DWV) piping systems. This cap allows plumbers to simultaneously test two pipe sizes from a single fitting, reducing the number of tools needed on the job. The dual-size design fits both 3-inch and 4-inch pipe openings, making it a practical choice for rough-in inspections and system verification before walls are closed. Licensed plumbers and pipefitters typically use test caps during DWV rough-in stages to confirm system integrity under required test pressures per applicable plumbing codes.

This test cap is suited for residential and light commercial plumbing applications where DWV systems require pressure or air testing prior to inspection sign-off. It is commonly used during new construction and remodel work where the plumbing rough-in must pass inspection before proceeding to finish work. The dual 3-inch and 4-inch sizing covers the most common drain and waste pipe diameters found in residential plumbing installations.

Key Features

• Dual-size design fits both 3-inch and 4-inch pipe openings
• Intended for pressure and air testing of DWV piping systems
• Reduces required test equipment by combining two sizes into one cap
• Designed for use during rough-in inspection stages

Compatibility

Designed as an OEM-style replacement and standard-use test cap for 3-inch and 4-inch DWV piping systems in residential and light commercial plumbing applications.

Installation Notes

Installation and use should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Ensure all water supply is shut off and the system is depressurized before installing or removing test caps. Do not exceed the pressure rating of the piping system or fittings being tested. Remove the test cap after inspection approval before the system is placed into service.

Technical Specifications

• Pipe Size: 3 x 4 inches
• UPC: 675115238343

Standard Information

• Brand: OATEY
• Manufacturer Part Number: 238348