2 1/2" - 4" Deringer 20 Double Check Backflow Preventer Maintenance Video

A great start to the weekend for Backflow Direct as we are pleased to introduce our first maintenance video which provides step by step instructions on how to properly maintain a 2 1/2 - 4" Deringer 20 Double Check Backflow Preventer. The video can be found on the Backflow Direct YouTube Channel or on our website on the Downloads Page. Have a great weekend everyone!