Did you know that high-pressure jetting of sewer pipes can damage some pipe materials?“All sewer pipe can be damaged,” says Kent Carlson, vice president of the National Clay Pipe Institute. Whether fabricated out of clay, plastic, iron, fiberglass, asbestos or some other material, a sewer pipe ultimately can only withstand so much pinpoint pressure from a nozzle before failing.The real question, Carlson says, is how much assault a segment of pipe can withstand before it fails. The answer varies from product to product, and therein lies a problem for cleaners and those who maintainer sewer systems.Because Carlson is an official
