When a backflow preventer needs to be replaced, can the two isolation valves remain in place, closed, and only the center body of the backflow be inserted in-between these isolation valves?
Would this violate the listing on the assembly if it's a one-for-one replacement?
If the backflow is listed as an entire assembly, then it seems as though an additional isolation valve on the supply-side of the backflow preventer would often be needed to shut off the system just in order to replace the backflow preventer.
Posted anonymously by a member for discussion. Discuss this | Subscribe
12/11/2018 08:28:34 am
Most backflows are listed as an assembly. If a non-certified person was to do work on or replace just the check portion of the assembly as you describe, you could very well void the listing.
12/11/2018 10:56:31 am
The backflow manufacturer will sell a replacement kit with thier specific instuctions. My experience is a certified technician can replace the backflow with out replacing the valves.
Leave a Reply.
Subscribe and learn something new each day:
Top May 2023 Contributors
Get 100 Days of Free Sample Questions right to you!
PE PREP SERIES