Glycerin Filled Vacuum Pressure Gauge, 2-1/2" Clear dial,1/4" NPT Bottom Connection, Stainless Steel Case, Brass Movement, Dual Scales -30HG/30PSI

Bought this to replace broken gaige on my nitrogen regulator (HVACR). Worked like a charm. So much nicer than stock gauge. However I should have paid attention to size closer. Its held up well...through workers knocking my tank over...:/

I used this gauge to help solve some suction-side pool plumbing issues. The pump was not priming and I didn't know if there was a problem with the pump or the plumbing or both. With some PVC and a couple of other pieces I made a fitting which connected to my inlet plumbing at the pump. This worked perfectly and after some debugging I realized it was the pump (a seal had worn) and not the plumbing.Something easy to miss with this gauge that probably led to a number of people having issues (and giving poor reviews); a vacuum gauge measures the difference in air pressure between what's in your pipe and the atmosphere, therefore you typically need a small weep hole somewhere on the gauge to let the outside air pressure in. This gauge has a rubber stopper top with a pointy nub and some small print on a label saying to cut the nub before using - this lets the atmospheric pressure in. If you do not do this it will not work correctly! This product does not come with instructions so if you miss that little label and direction on the gauge you're going to have problems.Overall I'm very pleased with the quality and performance of this gauge.

I like the 0-60 dial easy to read when adding air to vehicle tires. I had a digital gague on my tire inflator and I got tired of dead batteries. I also wanted an accurate readout, tested with a pencil tire gauge to see if both inflators read the same. I really like the 2 1/2" dial very easy to see with old guy eyes. I added a few wraps of teflon tape to the threads to ensure a good seal, no leaks and works perfectly.

I have a couple of smaller gauges that fail...This gauge is much easier to read and so far have not failed (due to the liquid filling)...seems to be much better than the ones I have.

The product feels solid and has easy calibration. Shipment was expedient and efficient. Affordable, great build quality, and wonderful logistics (directions, website, and shipping etc.) No issues!!!!! Highly recommend.

Very well made and has worked fllawlessly

Perfect fit for my water pressure regulator on my RV

I installed 2 of these to regulate vacuum in a couple of engines. These gauges pressurize themselves inside the body. I will come out in the morning to find the gauge showing vac when the engine isn't running. I have to open the rubber cap at the top to release the pressure in the gauge housing for it to go to 0 again and read correctly. This is a poor design and makes the gauge untrustworthy. Pressure in the housing should not change the readings like this.