- NANPU 1/2" NPT Industrial Grade 3 Stage Air Drying System - Particulate Filter, Coalescing Filter, Desiccant Dryer & Air Regulator, Metal Bowl, Auto Drain, Suitable for Paint Spray＆ Plasma Cutter

quality product ,versatile ,worked very well for my projects..and i like that you can add more filters if you like..

This filter is awesome. Everything works perfect. Absolutely no leaks. Seems like it seals perfect. I conducted a pressure test and it held for a full day with no problems before i released the pressure. Very easy to install and excellent quality for the money

Good filter for air compressor work. Added for my newly purchased plasma cutter.

I have been using this on my airlines for my entire shop. I use plasma torches and the air blower all the time. I haven’t had any issues with leaks or a restriction of air flow. So far this thing does a great job of removing moisture and filtering the air from my 80 gallon compressor.

I’m running a plasma CNC table as a small startup business and really needed something to dry out the air, this fits the bill. The fittings that came with it can be thrown away go to the hardware store and get proper pipe fittings, and the desiccant has to be replaced quite often as it’s a pretty small volume, but desiccant beads are cheap and changing them takes 30 seconds. Like I said for the price it does the job very well, would give 5 stars based on that alone but the included pipe fittings were pretty silly

Excellent 3 way filter..... it filters a lot of the water out of the air, the dessicant bead last a couple uses if you are spraying small part but for a whole car I would probably change them with every stage, after primer, after base & after clear....also good to have the spare filters and dessicsnt beads available to buy from the nanpu store if you need them

This unit works well to remove airborne vapor, oil, and particulates, but replacement filters are difficult to find and the auto drain gets stuck open somewhat often so it just blows out air for a few minutes before closing again.

Great System, Does exactly what it's supposed to do. I have 2 of these units and no issue with my air system.

works great as advertised. keeps water out of lines. no complaints.

It works

Poor quality, the containers crumble into powder and the pearl compartment becomes very difficult to open to change the filtration pearls. I don't recommend it at all, it's too much to pay for absolutely nothing good.

The unit I received looked suspiciously USED ...with swirls of corroded aluminum in the first separator, and the auto-drain wasn't properly tightened. To make sure it wasn't flat-out defective, I ran 60 gallons of compressed air at 175PSI and 30C through it. using its built-in regulator to drop the pressure from 175PSI to 100PSI while pulling a continuous flow of about 8CFM (eventually emptying the switched-off compressor's tank). For the record, this unit claims to be rated at 45CFM and 200PSI. After the compressor was empty, I opened and inspected each filter. There were two or three drops of water in the first stage (water separator), nothing in the second separator (oil trap), and all ALL of the desiccant in the third stage (air dryer) was red and damp, indicating it was spent. Note that the unit holds unit holds about 1/2 cup of desiccant beads. That is NOT 95% the claimed water removal. The "auto drain" functionality is a lesson in poor industrial design. Firstly, the mechanism wasn't installed properly, - and second, it won't actually drain until the tank pressure drops below about 3 psi. Although it looks like a large, precision-machined professional system on the product page, in reality the the whole unit easily fits on a sheet of paper, and wouldn't make it through an hour of moderate use on a 3-4 HP compressor. This dryer LOOKS beautiful, but in reality, can only handle a 1 to 1.5HP compressor, and the air entering it can't be more than 30-40C ...in order for the first stage to work properly. You'll need to run it through some sort of cooler between the compressor head and the storage tank.

Showed up in what looks to be a used condition. Canisters we’re all corroded and float drain on first canister does not function