PureSec Water Pressure Gauge Oil Filled Stainless-Steel 2-1/2" Dial Size Dual-Scale with 1/4" Lower Mount for RO System(0-1kg(MPa)/0-150psi)

Works well and easy to install to check waterline pressure

I'm using this gauge for the pressure coming from my reverse osmosis to my fridge. My ice maker wouldn't work until I added an extra pump. All good now and this pump seems to work perfectly. I have no way of knowing how accurate it is, but it read very different pressures before and after the pump and seems to be accurate to the pressure the pump is supposed to provide. Seems like a very good deal considering it included the needed fittings. I wrapped the gauge with some teflon tape and there are no leaks.

One of the standout features is its dual-scale measurement, which allows for accurate readings in both MPa and psi. This versatility is a huge plus, especially if you're working with different systems. The oil-filled design ensures smooth operation by dampening vibrations, which also contributes to the gauge's longevity compared to air-filled alternatives.However, there are a couple of downsides to consider. The installation process can be a bit tricky, especially if you're not familiar with plumbing or pressure systems. You might need some additional tools or assistance to get it set up correctly. Also, the price might be on the higher side for those looking for a budget-friendly option.

Great quality gauge for monitoring membrane pressure. Bought second gauge for my other system when I saw how good it was. Comes with necessary fittings which are expensive when purchased separately. Great value in this gauge. Highly recommend.

I was having issues with my reverse osmosis system and bought this to confirm that water pressure wasn't the issue. You'll need some pipe tape for the connection of the meter to the included pipe connector, and you should plan ahead where you will put the meter because it won't stand upright via the pipe connections alone.Plan where you will put it so you can use a zip tie or something. I positioned mine so it rests at 90 degrees on a drain pipe. If you can position it along a wall, some double sided sticky pad should work quite well.FYI - The liquid shown inside the meter in the photo is Glycerin, not your water running through the meter.

Works great, easy to read, and no leaks in the 2 years I’ve had it.

As listed

I Hooked 2 of these gauges up to my RO system. One at the inlet after the booster pump and one before the RO membrane housing, just like most people do. After turning on the water supply and my tank, both gauges showed 0 psi. I did a quick check to make sure I didn't connect anything wrong and checked for clogs at the T fitting. I even tried to connect the gauge directly to my water inlet and turned it on with water flowing and pressurized. Still no flutter from 0 on the psi needle. I have a feeling both of these gauges have a factory defect or have been through either damage or temperature changes in shipping. Either way, they both don't work even after cutting the rubber stopper at the top of the gauge to vent extra oil out as instructed, even though I knew that would not have solved the issue I was experiencing. I'm very dissatisfied!