A friend has a 3/4" (0.75") water meter at their 1.3 ac property. We want to do some fertigation with their irrigation so we're looking at a Reduced Pressure Backflow Preventer. The main line for the irrigation and hose bibs is going to be 1.5" PVC.

What size RPBP/RPZ should we use?

I was thinking that since I'm using the 1.5" mainline that we'd need a 1.5" RPBP/RPZ, but I feel like that's overkill given the 3/4" meter.

Thanks for any guidance on this. I don't want to get a mega overkill system going, but do want it to not be overly throttled and lead to irrigation issues down the line. Thanks!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.