BETOOLL Nitrogen Regulator with 0-800 PSI Delivery Pressure Equipment Brass Inlet Outlet Connection Gauges

Low quality gauges and brass nut size is different

So far this product has been great. It seems to be good quality.

Workd great

*** 2 stars taken off because I bought 2 and both has the right pressure gauge cracked per my photos. Amazon is taking them back no issues, but this is for sure frustrating and I'm hoping the third one I get doesn't have this issue. They're packaged very well so I think it's just bad QC at the factory.** Update: third gauge set received, this time both gauges had cracked window edges. I'm just going to keep one and live with it for the price...** Update 2: customer service reached out promptly to remediate my experience, and assured me they're looking into the manufacturing problem. Giving 1 star back for great customer service.---------I'm reviewing the 800 PSI version, which the product description says has a max output of 700psi. I can't speak to the 600 PSI version.For HVAC pressure test, I need to test between 550-600 PSI, so I bought the 800PSI version. In my preliminary quick test, the pressure release valve opens right at 700 PSI, and closes again somewhere between 630-650 PSI (see photos). This is more than enough for what I need, but I believe you can take off the pressure relief valve and adjust it higher if needed.Accuracy wise, the gauge reads almost exactly what my Yellow Jacket gauge reads, so no issues there.I used a drop of HVAC oil before inserting the knob, which is pressure rated. Worked great and didn't have issues with turning the knob all the way to 700 PSI and beyond. The knob can definitely go further so no issues there.Overall incredible value for the money, minus the cracked gauges QC issues.

Main cylinder pressure gauge was completely bent and no noticeable damage on the packing. Very weak structure.The line pressure gauge needle was below the stopper pin. Was a cheap gamble and didn't pay off.

Great product at a really good price