Test Plugs

What Are Test Plugs and Why Are They Important?

Test plugs are temporary sealing devices used in plumbing and industrial systems to isolate pipe sections for pressure or vacuum testing. They help identify leaks and confirm system integrity before use, making them essential for safe and efficient installations and repairs.

What Are the Main Types of Test Plugs?

1. Plumbing Line Test Plugs

Seal pipe sections for leak testing.
Feature a pressure-responsive annular membrane that expands hydraulically to form a secure seal.
Common in residential and commercial plumbing.

2. Branch Pipe and Tank Nozzle Test Plugs

Used to test connections between pipes, tanks, and nozzles.
Allow for both pressure and vacuum tests.
Often used in welding applications requiring inert gas purging.

Explore Test Plugs at Our Canadian Warehouse

Lansas Single Size All Rubber Inflatable Test Plugs

Lansas Single Size All Rubber Inflatable Test Plugs are engineered from a specially formulated natural rubber compound, offering unmatched strength, reliability, and durability for air and water testing applications. Designed for various pipe sizes (from 3/4" to 12"), these high-pressure plugs withstand up to 15 PSI and feature enhanced components such as zinc-plated chains for smaller sizes and removable fittings for larger ones.

Lansas Multi-Size Inflatable Test Plug with 3" Bypass for 8" to 12" Pipes

The Lansas Multi-Size Inflatable Test Plug with 3" Bypass for 8" to 12" Pipes is designed to fit pipes from 8" to 12" in diameter. Made from a specially formulated natural rubber compound, it excels in stopping flow, sewer bypass, and air testing applications. Key features include a 3" aluminum bypass, an air test conversion cap, and a pressure capacity of 25 PSI inflation and 15 PSI back/test pressure.

Lansas Single Size Long Inflatable Test Plugs

Lansas Single Size Long Inflatable Test Plugs are designed for easy installation through cleanouts or floor drains and provide a secure seal within the wye. With a pressure rating of up to 15 PSI, they are ideal for rigorous air and water pressure testing. Key features include high resilience, reliable sealing, and added accessories like a 36" extension hose and a removable chain and ring. Available in multiple sizes, they are the optimal choice for professional system testing.

FAQs

1. Can test plugs be used for both air and water pressure testing?

Yes, many test plugs are designed for both air and water pressure testing, but it's important to confirm the manufacturer's specifications. Some plugs handle high water pressure better, while others are built to safely contain air pressure. Always ensure you're using the correct plug type and pressure rating for your testing medium to avoid accidents.

2. What size range do test plugs typically cover?

Test plugs come in a wide range of sizes, from as small as ½ inch to over 72 inches in diameter, to accommodate everything from domestic plumbing to large-scale industrial pipelines. Many models are adjustable or expandable to suit a range of pipe diameters, making them versatile tools across different plumbing and construction projects.

3. Are test plugs reusable, or are they single-use only?

Most high-quality test plugs, especially mechanical and inflatable types, are reusable as long as they are properly maintained and not damaged during use. Single-use plugs, often made of lightweight plastic or thin rubber, are cheaper but not suitable for repeated applications or high-pressure environments.

4. How do you safely remove a test plug after pressure testing?

To safely remove a test plug, first depressurize the pipe system completely. For inflatable plugs, ensure all air or water is released. For mechanical plugs, loosen the tightening mechanism slowly to avoid sudden release. Always wear safety gear and follow the manufacturer's instructions to prevent injury or pipe damage.

5. Can test plugs be used in vertical as well as horizontal pipes?

Yes, test plugs can be used in both vertical and horizontal pipe orientations, provided they are properly secured and compatible with the pipe material and pressure type. In vertical applications, special care is needed to ensure the plug is anchored and supported correctly, especially in larger or high-pressure systems.