Oatey 271721 Pneumatic Pipe Plug 4 Inch 13 Psi

Product Description

The OATEY 271721 is a pneumatic pipe plug designed to temporarily seal and isolate 4-inch diameter pipe during plumbing service, testing, and repair work. The plug inflates to create a pressure-tight seal within the pipe bore, holding at a rated working pressure of 13 psi. Constructed from natural rubber, the bladder conforms to the interior pipe wall for a reliable seal across common pipe materials. Plumbers and drain service technicians use this tool when isolating a section of drain, waste, or vent line without cutting or capping the pipe permanently.

This pneumatic plug is suited for residential and light commercial plumbing applications where a 4-inch drain, waste, or vent line must be temporarily blocked. Typical uses include pressure testing newly installed piping, isolating a section of drain line during repairs, and controlling flow during pipe replacement. The inflatable design allows quick insertion and removal without damaging the pipe interior.

Key Features

• Rated for 4-inch diameter pipe for precise fitment in standard DWV lines
• 13 psi working pressure rating supports standard plumbing pressure test requirements
• Natural rubber construction conforms to pipe wall for a reliable pneumatic seal
• Inflatable design allows tool-free insertion and removal without pipe modification
• Reusable construction suitable for repeated service and testing use

Compatibility

Designed as an OEM-style pneumatic plug for temporary isolation and pressure testing of 4-inch drain, waste, and vent piping in residential and commercial plumbing systems.

Installation Notes

Installation is performed by licensed plumbers or qualified pipe service technicians. Before inserting the plug, confirm the line is depressurized and free of flow. Insert the deflated plug to the desired depth, then inflate to the rated working pressure using a hand pump or regulated air source — do not exceed the 13 psi rating. Follow all applicable local plumbing codes and IPC guidelines when conducting pressure tests on drain and vent systems.

Technical Specifications

• Pipe Size: 4 inches
• Working Pressure: 13 psi
• Material: Natural Rubber
• Plug Type: Pneumatic (Inflatable)

Standard Information

• Brand: OATEY
• Manufacturer Part Number: 271721