NANPU 1/4" NPT Air Compressor Filter & Pressure Regulator Combo w/Gauge

This is a solid little regulator\filter. Works just fine. It comes with two 1\4npt nipples and a 1\4npt, male and female quick disconnect. The nipples are made from aluminum and the quick disconnect is plastic. I was actually surprised I got these, guess I didn't read the info. I know, aluminum and plastic? I'm sure if you used them they would work just fine. The only complaint I have is that the adjustment knob is kinda slick and smooth and tapered a bit making it hard to adjust because you need to pull the knob up to unlock before turning. This has a "semi automatic" drain on the filter bowl. This means that when there is no pressure going to the regulator the little valve is open and will drain liquid. When you turn on your compressor the regulator will sound like it's leaking air for a few seconds until it reaches about 5 psi and the bowl valve will seal and you're good to go. If your system is always pressurized you will have to disconnect the air to the regulator to drain any accumulated water in the bowl. Pro tip: Do not connect this directly on the compressor. Connect 25 to 50 feet of air hose to the tank. At the end of that hose connect the regulator\filter. Doing this allows the hot air coming from the compressor to condense the water vapor into liquid water so the filter can catch it. This is important when you are doing spraying or blowing and the compressor is running a lot. Also, the specs may say that this unit can be used up to 175 psi, but if you don't need 175 psi adjust the output to 125, of you can.

It works as it should, easy installation, looks sturdy, need to see over time how it behaves, the moisture removal valve operation is new to me, but it's a habit, looks more durable than the previous one.

I'm pleased with this little regulator. I'm using it only for a small oilless airbrush compressor, and it works fine for my purposes. I like the automatic water separator bleed, although my compressor doesn't move air fast enough to set it automatically (I have to manually hold it shut for a moment at every startup). This way I never have to remember to dump it before running into problems with my airbrushes. This was worlds away better than the original regulator that came on my compressor.

Good Filter / Regulator Combo. Well made, and came with everything I needed.

Perfect fit for my small airbrush compressor. Easy to assemble and easy to clean / maintain. Good so far.

The regulator seems to be of a nice build. It was super easy to install/mount. The PSI increments lines on the gauge are at odd intervals. The gauge is slightly inaccurate by maybe 2-3 PSI. However the threading on the ¼ bores for the air in/out aren't that well machined. Using the supplied cheap Teflon tape I still had slight leaks. I bought premium Teflon tape and applied a ton of it to the threads and now it's leak free. It's a small compact size regulator compared to high end regulators. I bought the manual drain one but replaced the cup with an auto drain style cup I had lying around. I put an industrial style high flow male air fitting on the intake side of the regulator. It features a brass filter which is better than plastic. I like how it comes with 2 ¼ NPT brass extensions. I plan on attaching a dessicant dryer on the air out side of the water filter with an inline ¼ brass screen filter on the dessicant filter out port to prevent dessicant beads possibly getting into the plasma cutter hose. Then a ¼ push connect hose fitting with a polyurethane tube that's leads directly into the plasma cutter. For the money you can't beat it.

As described and delivered on time

I needed a filter/regulator for a low-pressure, low-flow line (~20psi at a few CFM) that came off my main 80-100psi line. If you don't care about leaking a bunch of air, it probably does okay. The filter itself looks fine, but when I hooked it up to the line and turned on the air, it was leaking out the top of the regulator (by the knob the way a normal one will for a few seconds when you change the PSI when the line is already pressured). Maybe my application was too low-pressure for it to handle, though I doubt that as I went up to 40psi as well just to test it. It also leaks air out the drain like it's not actually sealing and I couldn't fiddle with it enough to make it stop. Not sure what the issue is there. Maybe I got a dud. The fittings are nice enough for low-pressure plastic, but the teflon tape it comes with is trash. I picked up an ARO and that immediately worked. I guess you get what you pay for (it was twice the cost).

This was purchased tp replace a different brand I had to send back due to it being broken and generally low quality. This one arrive well packaged from the factory. Everything was in a foam enclosure and then a high gloss cardboard box. Attractive and lots of protection. The build quality was noticeably much better than the other brand yet was just a couple of dollars more. I installed in on my compressor and adjusted the regulator. Everything seems to be working perfectly.

I’m hesitant to give this ‘full stars’ because when I installed it, it worked perfectly. BUT After couple of power outages and pressure dips the o-ring that seals the moisture drain developed a slice and would perpetually leak. I ended up replacing the o-ring with another of a similar width from a dry-herb vaporizer I had laying around in a maintenance kit. That upgraded o-ring is holding beautifully and I have zero other complaints about this reg/separator. It does it’s job perfectly (as long as you’re the type of person to notice, identify, and repair minor issues like a leaky $0.05 o-ring Edit - new prong is holding up beautifully. I can’t tell you it absolutely wasn’t user error so, based on ease to repair and functionality pre and post repair….it’s properly solid for a home workshop

Worked great

Does what you'd expect. Bought for my airbrush and realized a little too late I had to buy some additional adapters to use it with my airbrush/compressor. Great quality, but I wish I'd realized sooner and bought a kit that included a 1/4" NPT to 1/8" BSP adapter. I also opted to use a metal quick connect, rather then the plastic one that's provided.

Didn't last the summer before the regulator started passing. Catches most of the moisture/oil but not all. Ordered a replacement while I purchase upgraded system. Would not buy again