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I do agree with telescoping and I think they did that.
My main question is how much will I gain by increasing the backflow up too 1 1/4" from 1"?
The pipe is 1 1/4" coming out the 1" backflow but I need all the pressure I can get.
Thanks.
Umm....i cant believe that much will come out....mb 5 more PSI or 1 more GPM of course you'll get something but not enough for a major breakthrough....you might have to split the sprinkler zone if you dont have enough pressure to run it. Is this the only zone that does this?
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers
Is your main line 1 1/4"? If so, it may be worth installing a 1 1/4" PVB. and replacing your main line with 1 1/4" PVC if its currently 1". You can buy a 1 1/4" PVB here at Sprinklerwarehouse. They have a 30 day no questions asked return policy.
You will loose pressure with distance and every 90 degree turn.
My inside plumbing and well is 1 1/4" and 1.5hp. The pipe from my house to the PVB is 1 1/4" my Febco PVB is 1 1/4" and my main line (schedule 40 PVC) is 1 1/4" to the valve box (~ 50' - 75' from PVB). I have eight zones all well over 100' (fartherst ~200') using 1" poly throughout. I average 55 PSI for about 10 - 15 minutes before my pump cycles (at 60 PSI).
My pressure has been great! In fact, I had to increase the nozzle size on my I20 heads and wire my "8 head" zones toghether resulting in 16 heads per zone (totaling 8 zones).
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Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers
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