Backflow

With some confusion and misinformation regarding acceptance of ASSE's backflow prevention assembly tester certification in California, I'd like to answer some frequently asked questions...

When we deliver clean, safe potable water from the water distribution system to a service line supplying a consumer facility, is our job of...

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” Apollo RP4A. Can you tell me about this assembly? How do I replace the check valve discs and...

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

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 servicing a 1” Wilkins Model 720A. Can you give me any helpful hints on how to repair this assembly? DOUG:The Wilkins 720A is...

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

When we look at the required cross-connection protection, it is important to understand the system type, piping material, water supply to the system, and...

Backflow test kits have been on the market for over 50 years. Some of the original design technologies have stood the test of time...