I am setting up my 4 zones system with a Rachio 3 Pro in SEA. Already got a good 220-240V to 24V AC output for the Rachio controller. I am trying to figure out how to get a pump relay box to work with those small 12/24V DC on demand diaphragm pumps (my locally accessible ones are SEAFLO units, I am looking at the highest throughput one which is the 51 Series).
My municipal STATIC pressure is only hovering around 25 to 30 PSI during peak hours, it can be 35 PSI during off-peak.
Doing the math with flow and scheduling, I highly doubt the pressure is enough for my system (which are all 30 PSI regulated, 3 drip line zones and 1 medium sprinkler zone).
Those relays I see available such as ORBIT 57009 are 110/220 AC output only. My reason for the smaller on demand diaphragm pump is I need something smaller. Can’t see myself installing a bigger delivery pump in a 14x20 valve box. SEAFLO does have 110/220 AC units, but they’re not easy to source apparently.