For those who aren’t sure, PB pipe for main plumbing lines can be blue, but the piping is usually gray and sometimes black plastic. Acetal fittings are usually gray and occasionally white ...

Polybutylene is often called “poly,” “Poly B,” or “PB.” These days ... They are installed by connecting sections of pipe together with plastic fittings, which are secured with metal ...

Outside a home, blue, gray or black piping at the water meter or pipe entry site may indicate the presence of a PB yard service line. Under the terms of a class-action settlement between consumers and ...

A settlement of the lawsuit was reached with du Pont only. The plumbing systems included in this class action are made of polybutylene pipe and acetal plastic insert fittings. The PB pipe is usually ...