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The last 6 posts

Friday, April 21st 2017, 6:39pm

by BackflowInspector

Did you experience freeze this winter?
If your backflow preventer froze, you can usually repair it with a repair kit.

They are available from sprinkler warehouse.

They are the online store that sponsors this forum.


Friday, April 21st 2017, 12:44pm

by Thokie1

New backflow preventer

New backflow preventer spews water from top! What to do to fix

Tuesday, March 28th 2017, 2:25pm

by BackflowInspector

Just Because they deem irrigation to be low hazard does not take away the need for a backflow preventer. It does dictate that you can use a low hazard backflow preventer. The only low hazard testable backflow preventer is the double check.
The Pressure Vacuum Breaker is a great choice for Irrigation when back pressure is not an issue from elevation or pumps.

I would not mess with the valves at all.
The PVB will provide great protection when installed correctly.


Tuesday, March 28th 2017, 10:49am

by paul1919 (Guest)

Back Flow Preventer

I looked up our building code and it stated that residential sprinkler systems are considered low hazard, therefore back flow devices are not required. I disagree ! After doing some research I will install a Wilkins 1" 420XL (lead Free) myself, just to be safe. question is irrigation valves are RainBird DV-100 are original to the house which is 24 years old ! Should I consider the RainBird anti-siphon valves ? Or is this over kill ??

Monday, March 27th 2017, 7:11pm

by BackflowInspector

I expect the answer to be That it depends on what you are supplying water to.
If it is Protecting the water supply from the irrigation only, the leaded PVBs are fine. If you are using it in another application that could could change.

Many water districts or cities may not be aware of different applications, and they may require everything lead free.

Local Codes are what you have to follow.

Local Codes are generally based on National, Federal EPA, and Plumbing Codes, But the Local is what you have to be concerned with as they will approve or reject your permits.

Monday, March 27th 2017, 12:06pm

by paul1919 (Guest)

Back Flow Preventers

Do back Flow Preventers (PVB) now have to be lead free ??