Backflow preventers are assemblies with two check valves and two shut-off valves that prevent reverses in process flow. They may also include test cocks for each chamber within the assembly. Backflow ...

Sewer backflow preventers are an essential part of your home's plumbing. Here's why you need one and how to test if yours is ...

Find 126 Backflow Preventers suppliers with GlobalSpec. Our catalog includes 105,715 manufacturers, 20,956 distributors and 94,439 service providers. The GlobalSpec database includes 62,218 ...

Find his work on sites like Angi, USA Today and The Pen... Backflow preventer installation costs between $105 and $1,400, with the average property owner spending $325 per backflow preventer.

A big pipe carries waste from your house to the main sewer line under the street. If either becomes plugged or overloaded, sewage backs up and flows out of the lowest available drain. That’s usually a ...