Backflow

Consumers and building owners continue to read and hear about the deteriorating quality of their drinking water. Chemicals such as per- and...

Performing a backflow preventer installation on an existing fire suppression system can be an intimidating job — the installer’s level of experience...

My colleague, Terry Burger, has written about the confusion over hydrant backflow protection, as well as the differences in the various devices,...

You may know them by one of their various names: sill cock, wall hydrant, spigot, garden hose faucet, lawn faucet, wall tap,...

Welcome to this year’s annual Backflow Prevention Issue of Working Pressure magazine. Aug. 16, 2022 was the second annual National Backflow Prevention...

According to the ASSE International Plumbing Dictionary, working pressure is the maximum pressure in a water piping system allowable under normal working conditions. Likewise,...

In each issue of Working Pressure, we ask 10 questions to a training coordinator or instructor of an ASSE-approved training provider. Some questions are...

Question: I have an Ames 4” Model 3000SS that I’m trying to repair. I was told that the check valves are threaded into the body...

As someone who has the privilege of teaching cross-connection control and backflow tester certification classes in many different areas of the United...

Question: I need to service a Wilkins 1” Model 720A. Can you tell me if there are any special tools that I will need, and...