SNS 1/2”NPT Compressed Air Filter Regulator Piggyback Combo, Semi-auto Drain, 5 Micron Brass Filter, Gauge and Bracket, Poly Bowl with Metal Guard AW4000-N04A

It seems to be well built and is easy to install. The instructions are in Japanese primarily, but also come with English as well. Reasonable price compared with other products that are similarly spec'd. I tested it multiple times without any leaks or issues. I have the psi set to 125 lbs. which is more than enough for what I'll need it for. e.g. tire inflation, air tools, plasma cutter etc.

After spending enough on my compressor I didn't feel like spending hundreds on a regulator so I bought this 1//2 inch one for thirty eight bucks. It is working fine maintaining 90 psi with an air grinder while provided with 175 psi on the intake. The plastic bowl is protected by a metal shield that comes off with a push of a lever and a twist. Inside the bowl is a sponge bronze filter that is held on by a plastic nut that you turn to take it off and hold it in place.The bowl itself has an o-ring at the top to prevent leaking. The regulator comes with a 1/4 MPT gauge and a bracket that I didn't use, with screws. I had a problem with leaks at first but I don't think it is the regulator's fault. The 1/2 inch pipe threads are about an inch long and seem to have a taper. The problem I had was with the hex nipples. They do have tapered threads but not consistent and not long enough. I had to select the side with the most taper and screw it into the regulator all the way until it bottomed out in order to stop the leaks. I have used 1/4 inch nipples like these and have had the same problem I don't allow any leaks in my system no matter how small. I included a photo of my hour meter that I set up using a project box that I also bought on Amazon. The meter is wired in parallel with the motor. I am satisfied that the regulator will do the job it is intended to do and have given it five stars.

For the price it appears to be worthy of purchase. Don't buy this based on the description of "metal bowl". The actual bowl is clear plastic with a metal shield over it. Your going to pay $90 plus for a good one with a real metal bowl so this was a cheap alternative for replacement of a failed IR Aro. So as long as the plastic holds up a couple years it should be worth it.

Filtering air for a diaphragm pump

The regulator seems to work, but the gauge is useless, stuck near 150psi.