Backflow

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 States (and...

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...

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

Question: I am repairing a 1” Apollo Model RPLF4A. Are there any special tools I will need to complete the job? Mark: Conbraco/Apollo Model RPLF4A is a...

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

With things moving toward a new normal and the COVID situation becoming more under control in many areas, we are again on the road...

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

Question: I am working on a 4” Wilkins Model 350ASTDA. Can you give me some background about this assembly and explain how to service the...