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Agreed. I recall these backflow were 50-60 bucks in 2022. 10% or so maybe ok but they doubled the price and I just refuse to pay the ransom money lol, hopefully they will go down to normal price again in the future.

Yeah, the problem is that the 3/4 metal pipe (galvanized) leaking under the concrete. The pipes inside the crawlspace is fine but I have some pipe banging issue before with city supply at 120+psi (the main reason why it was put after the PRV - I ran my valves at 4-5AM). I'm using 3/4 valves...

It is Zurn Wilkins Model 720A Bronze Fnpt 3/4-in Pressure Vacuum Breaker (Model #34-720A). I dont see any GPM rate on the spec but it is rated 150 psi and the supply is about 80 psi (after PRV). https://www.zurn.com/product-families/a-p/model-720a/34-720a

Thanks!

Thanks, I just know such product exist. I DIY this myself so I took a lot of pictures instead before placing the dirt back. Would it be a problem mixing 3/4 inch line with 1" line? And install 3/4" backflow before the sprinkle heads.

Hello all, I'm redoing my irrigation. It has 3/4" copper supply under the house that I'm planning to tie it to 1" as far as I can to the beginning of the water supply. Once the 1" copper goes outside, I will tie it to schedule 80 (thinking of doing the copper all the way to backflow but again...

yes I do, I guess my question is why more people more toward setting it to SF. Some suggest 10%, most suggest 20%.

This is almost the same setting as the one that I come up with, except the DO, B1 and RS. RS were set CR (This is the part that I kind of confuse, many said RS and some said CR, not sure which one is better...my understanding is, they just a reserve and calculated differently), B1 is 5 minutes...

Right. I actually planned to use 8 pound per cubic foot, so 1.5 cubic foot that would take 12 pound of salt which translate to 4 gallon of water needed on the brine tank, with BLFC of 0.125, that takes 32 minutes. They dont use softener...they think it's too expensive, I think its a good...

My mistake, I guess my calculation is wrong. My water varies from 15 to 20 GPG, I guess I have to assume the worst water...which is 20 GPG. At usage of 180 gallons/day, that requires 3600 grains removal. Using C : 30k, that means 8.3 days between regeneration, make it 8 days. My resin is 10%...

My BLFC is 0.125 GPM actually. What is the recommended BF? I believe the default is 15, and please explain about the capacity...Gary calculator suggesting its 24K, I'm confused. The default setting on RS is RC, people have been suggesting RS, 20%. Do you know why? Also I read that if DO is...

I just installed the fleck 7000SXT softener and need help with programming it (48k capacity, 1.5cu ft). Based on 3 person@60 gallon, 16-17GPG hardness, assuming 3000k/day, in 8 days that come up to 24k grain. I did some research and came up with this : DF: GAL VT: dF2b CT: Fd (Meter Flow...