AquaTec RO Reverse Osmosis Water Pump Pressure Switch 80 psi 1/4" Quick Connect Black Plastic

The initial pressure of the unit was about 110PSI, and it was high enough that I saw a drop of water come from something that had been sealed well (just a single drop, so it may have just been cause by expansion rather than an actual leak). My storage tank is rated for 50psi, so I had it turned off during the tuning of the shut-off switch. I kept adjusting until the pressure was where I wanted it, and was able to get exactly what I wanted out of it. It dramatically improved the performance of my water dispenser and ice maker by allowing me to double the output pressure of my RO system without exceeding any of the pressure ratings. An excellent upgrade to my system.

Works perfectly. You may have to do like what I did and uninstall the mechanical shut off system that your RO system might have. It looks like a four-way valve - you won't need it when using this.

The product came as described and i was able to adjust the cut in at 80psi and cut out at 110psi. I did encounter a faulty switch but aquatec was KILLER in sending a replacement and I had the replacement next day. Wow, I couldn’t be more happy with this company and product. Highly recommend!!

I ordered this to replace a 40PSI switch just in case the internals were significantly different. I have a pressure pump in my RO system that this was to control. Initially with this switch installed the pump ran 100% of the time, and while the pump is rated for that it does heat up the water in the pump and line. Some simple turning and testing of the pressure regulator on the pump and on this switch got the two in sync and working as expected. I could probably have also removed the 90% auto-shutoff valve from the system instead, but I like at least the idea of that valve being installed. Switch works well. Time will tell about the reliability and longevity.

Bought this 80 psi switch for my aeroponics system. Set up a test mockup and was able to adjust the switch (using a 1/16" hex wrench) to shutoff at 100 psi. Turning the setscrew clockwise raises the PSI cutoff. However, after building out my final design, it wouldn't shutoff at any setting. What happened was I flipped the switch end-for-end and it won't work unless installed with a specific IN and OUT. It isn't marked for this so before you send it back as defective try installing it the other way around.

Tips: pressure switch runs in 20 psi increments. Meaning my 80 psi switch turns ON at 60 psi and OFF at 80 psi. The flow direction is IN on the right side (the insert with the small square removed) OUT on the left if looking at the label. I was looking for that info everywhere and couldn't find it so thought that it might be helpful to others. Overall great switch, occasionally drifts slights higher than 80 psi but not a big deal.

Arrived, looks like the real deal. Two problems. 1. No instructions on settings. What is default ? Where is setting for 80 pounds? Clockwise, counter, midpoint? 2. No adjusting tool. Seems like a little hex wrench should work. Does not. Smallest set is to small, next size up is two big. Is this a metric size? Nobody knows. A set of itty bitty wrenches is about 15 dollars at Home Depot, costs more then this gizmo. Tried running it as is, it allowed pump to run all night. In the morning the pump’s diaphram was literally groaning and pump was to hot to touch. So is switch defecrive, is the setting wrong, was it installed improperly, air in the line ? Nobody will ever know.

Aquatec puts out top quality products no doubt, but stuff happens and I needed a new pressure switch yesterday Pure h2o4u shipped overnight!!! Top quality response, Customer Service - yes!