Choosing a reliable shower drain plug for testing helps ensure your plumbing or bathroom installations are leak-free before final assembly. Below find five highly compatible, durable options across common sizes and use cases. Each product includes a quick overview of features to help you compare performance and suitability for testing DWV systems, shower pans, and tub installations.
| Product | Brand | Size / Type | Best For |
|---|---|---|---|
| Oatey 42270 130 Series Test Plug Tool | Oatey | Blue Polypropylene, 130 Series | Reusable testing plugs for 130 series fixtures |
| Eastman 2 Inch IPS Mechanical Test Plug | Eastman | 2″ ABS, mechanical, screw and zinc nut | Temporary or permanent pipe testing |
| Cherne 270229 End-of-Pipe Gripper Test Plug | Cherne | 2″ Yellow, end-of-pipe gripper | Seal inside pipe with high grip for tests |
| Cherne 270024 Test Ball Plug | Cherne | 2″ Black, test ball | DWV testing up to 13 PSI |
| SharkBite 1/2″ MNPT Shower Test Plug | SharkBite | 1/2″ MNPT | Shower head and tub installations, reusable |
The following article reviews five suitable options, highlighting build quality, compatibility, and installation simplicity to help you pick a plug that fits typical testing scenarios and keeps fixtures safe during pressure tests.
Oatey 42270 130 Series Test Plug Tool
The Oatey 130 Series Test Plug Tool is a reusable testing plug designed for 130 series fixtures. It features blue polypropylene construction for resistance to wear during repeated testing cycles. This plug offers straightforward reuse without needing specialized installation tools, making it suitable for contractors who run multiple test cycles on bathroom installations or pipe runs.
Eastman 2 Inch IPS Mechanical Test Plug
The Eastman mechanical test plug is designed for testing plumbing pipelines with a 2-inch diameter. It uses a screw and zinc nut system for secure engagement and a robust ABS plastic body for durability. Its mechanical design makes it dependable for temporary or more permanent testing scenarios, offering a universal fit for most standard drains.
Cherne 270229 End-of-Pipe Gripper Test Plug
Cherne’s 270229 is an end-of-pipe grip plug designed for efficient testing and sealing inside pipes as far as needed. It tolerates up to 17 PSI or 40 feet of head pressure and features an oversized zinc wing nut for easier tightening without extra tools. The design emphasizes strong sealing and ease of use in tight spaces where conventional plugs may struggle to seal.
Cherne 270024 Test Ball Plug
Cherne’s 270024 is a test ball plug with a 2-inch nominal size. It is designed to test DWV systems at pressures up to 13 PSI (30 ft). The natural rubber body provides reliable expansion to seal irregular pipe interiors, making it suitable for standard residential testing tasks where a flexible seal is beneficial.
Feekoon 1/2 Inch MNPT Shower Test Plug
The Feekoon 1/2 inch MNPT shower test plug comes as a 3-pack, designed specifically for pre-tiling pressure testing of showers. It is easy to install without tools and is built to be sturdy and lightweight, with a design that minimizes floor damage if dropped. A practical choice for contractors performing rapid successive tests on multiple shower assemblies.
SharkBite 1/2 Inch MNPT Shower Test Plug
The SharkBite 1/2″ MNPT shower test plug is designed for bathroom shower and tub installations. It seals the system for pressure testing and can be left in place until the final wall finishes are installed. Installation is straightforward—no tools, crimping, or soldering required, and the plug is reusable for other installations, though the guidelines recommend removing it before final kit installation.
Buying Guide
- Size and compatibility: Match the plug size to your pipe or drain diameter (common sizes include 1/2″, 2″, and 130-series fittings). Consider whether you need a universal fit or a dedicated plug for a specific drain style.
- Material and durability: ABS and polypropylene offer good chemical resistance and durability for repeated testing. Rubber components provide a robust seal for fluctuating pressures but may wear with heavy use.
- Sealing mechanism: Ball plugs, end-of-pipe grippers, and mechanical plugs each offer different sealing strengths. For high-head tests, prioritized grip or seal reliability is important.
- Reusability: Reusable plugs save time and cost on multiple projects but require careful inspection for wear before reuse. Disposable options reduce sanitation concerns but add ongoing replacement costs.
- Ease of installation: Look for plugs that install without tools or welding when possible, especially for quick test cycles. Ships-ready or tool-free designs reduce setup time and human error.
- Testing pressure range: Ensure the plug supports the target test pressure (psi) for your project. Some plugs are rated for low to moderate pressures, while others handle higher head pressure.
- Application safety: Follow manufacturer guidelines on removing plugs after testing, particularly before final wall or tile installation to avoid damage or compromised seals.
- Piping material compatibility: Confirm compatibility with PVC, ABS, or metal systems in your project to prevent corrosion or sealing failure over time.
- Warranty and support: Consider brands with clear warranty terms and accessible customer support if a plug fails or leaks during testing.
- Cost-per-use: When evaluating five options, weigh the upfront cost against expected number of uses to determine the most economical choice for your typical workload.