I built my own.
I built it to exactly what I wanted, but the messing on wasn't worth the hassle tbh.
Most suppliers will sell you a kit to your spec.
What I wanted.
2 x 20" prefilters with clear housings so I could see the condition of the filters inside. All fittings are for 1/2" hose using
John Guest 1/2" Push-Fit to 1/2" Male Screw BSPT Thread, 1/2" John Guest Stem to 1/2" Barb and John Guest 1/2" Stem Elbow
2 x pressure gauges either side of prefilters so I can see at a glance the condition of the prefilters. Our water is very sediment laden. The filter will be red within a couple of days. A drop in water pressure through the prefilters will identify when I need to replace the sediment filter. On occassion I have replaced the sediment once a month and fiberdyne carbon block every 3 months or when we process 78,000 liters of water through the r/o (waste plus pure).
Water meter. This is so I can see how much water has passed through the r/o.
HF5 membrane as our water pressure is 50 psi.
1 x 1/2" female threaded gate valve with 1mm hole drilled through the gate. This is commonly used to throttle the waste but the hole allows some water to waste even if the valve is accidently closed. This will prevent damage to the membrane if a third party starts messing around.
6 liter di vessel.
1 x 2 sensor inline tds meter. It monitors the tds of pure after r/o and before di and after di before the IBC storage tank.
1 x froststat temperature controller.
1 x 140 watt tube heater.
1 x normally off solenoid valve and float switch in IBC tank. When we installed this we had 3 windows cleaners taking water. I had to automate it so we always had a full tank of pure.
Wall cabinet with all items enclosed and kept at 10 degrees C.
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