The Evolution of Backflow Prevention Design
With any type of evolution, whether by nature or a technical evolution by man, there are certain driving forces that actually “get it going."...
ASSE One Year Field Test (1YT)
ASSE International is pleased to announce the nation’s first and only ANSI- and SCC-accredited One Year Field Test (1YT) program for backflow prevention assemblies....
Backflow Standards Activity
In keeping with its motto, “Prevention Rather Than Cure,” ASSE International is in the final stage of review and publication of four of its...
ASSE Series 5000 Revision
Each year I look forward to the annual backflow issue of Working Pressure magazine. Backflow prevention is what ASSE is best known for and...
Ten Questions With … Kenny Whitson
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...
4 Inch Deringer Model 40
Question:
I have a 4” Deringer Model 40. Can you tell me how to change the rubber parts for the checks and relief valve? Are...
Backflow Quiz
According to the ASSE International Plumbing Dictionary, working pressure is the maximum pressure in a water piping system allowable under normal working conditions. Likewise,...
The Ever-changing Backflow Industry
The focus of this issue of Working Pressure is “New Technology." In the backflow industry, changes occur all the time. Existing product standards are...
Random Tech & Backflow
According to the ASSE International Plumbing Dictionary, working pressure is the maximum pressure in a water piping system allowable under normal working conditions. Likewise,...
1 Inch FEBCO 860
Question:
I have a 1” Febco model 860 reduced pressure principal assembly that is dripping from the relief valve and needs to be repaired. Can...









