Although inflatable plugs are extremely convenient and versatile, they’re also less durable than other types of plugs. To keep them in proper working order and avoid unnecessary replacement it is important to use them correctly. Be careful to inflate the plugs only to the specified PSI (pounds per square inch) designated for each one. While it may be tempting to overfill a plug to try to fill a slightly larger line, you’ll save money in the long run by using the appropriate plug for the pipe being tested. The best way to ensure proper inflation pressure is to use a hand pump with an attached gauge. Since not all sizes have the same required inflation pressure, we’re provided a chart below for easy reference:
