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NANPU

NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Oct 1
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Size: 1/4" NPT


Style: 5 μ


Features

  • 1/4" NPT Piggyback Air Filters/Regulator Combo
  • Double 5 Micron Brass Filter Element, Excellent Filtering Performance, Much Longer Life and Reuse Feasibility
  • Max Supply Pressure:145 psi; Operating Pressure: 0-125 psi
  • Temperature Range: 41-140F (5-60C);Flow Rate: 18 SCFM (500 L /Minute)@ 90 PSI
  • Includes Semi-Auto Drain & Polycarbonate Bowl, 0-150 Gauge & Bracket,a pair of Air Coupler& Plug Kit, 2 x 1/4" NPT Fittings, 1 x Thread Seal Tape

Description

Double air filters is designed to remove most liquid and solid particles from the air supply，more cleaner than ordinary single filter. The Self-Relieving Pressure Regulator is used to adjust the outlet pressure. The original packaging and foam box give the product better protection, prevent any damage that may have occurred during transit. Air Coupler＆ Plug Kit, Thread Seal Tape and Fittings as additional accessories to bring more convenience to your installation. For more details about this product, please refer to the user‘s manual. Filters/Regulator Brand Package ＆ Foam Box Accessories User's Manual The assembly of all calibration shall meet the maximum flow requirement. Please clean the port and fitting before installation, it will effectively avoid bring dust to the air path. Pay attention to direction of air flow and arrow pointing on product body if correct, minding port and thread size if match. Pull up the knob of pressure gauge, rotate: If you do clockwise rotation, pressure will rise steadily.Pressure will down when you rotate counterclockwise. Stop turning after reaching the required index and lock down the knob,forget this step you may face leakage problem. Make sure that the pressure gauge is tightly installed on the main body, and pay attention to whether the reading rises and falls smoothly while adjusting pressure. Drainage column will automatic excrete if there is no pressure,and it will close during the air flow passing. When the water level is beyond upper limit, drainage is necessary, otherwise that will cause poor dehumidification. Notice: Please use a wrench to tighten fittings to avoid leakage. The first installation may have an excretion reaction ( Not leakage, for the first time the internal pressure is different from the outside, it is necessary to discharge the excess air first ) In this case, please patiently wait for a while and it will work well. At NANPU Pneumatic, we believe clean, reliable air power is the foundation of efficient industrial performance. With years of experience and a dedicated engineering team, we specialize in designing and manufacturing air treatment solutions—Air Filters, Regulators, Lubricators, and integrated FRL systems—that help protect your equipment and optimize output. Trusted by professionals across industries, NANPU products are built for precision, durability, and easy integration. Whether you're outfitting a single workstation or an entire production line, we offer tailored solutions to meet your exact air management needs. Empower your pneumatic system with NANPU—Engineered for Clean Air. Built for Performance.

Package Dimensions: ‎6.65 x 6.34 x 2.52 inches


Item Weight: ‎1.28 pounds


Manufacturer: ‎NANPU


Item model number: ‎DFR-02


Date First Available: ‎October 15, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 1

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Top Amazon Reviews

    • Excellent
Size: 1/4" NPT Style: 5 μ
It's a really great tool—my brother has one, so I gave it as a gift to my husband. It works super well; he loves it because he can work much more efficiently with the compressor. 10/10!
Reviewed in the United States on June 9, 2026 by Jessica Galindez
    • Nice Design, quality parts, Perfect Addition To Shop
Size: 1/4" NPT Style: 5 μ
I actually installed two of these items in my shop. They really work well to eliminate water in the compressor air lines! I would definitely recommend to buyers looking for a quality Air Drying System. Product UPDATE I’m EXTREMELY DISAPPOINTED WITH MY PURCHASE OF TWO OF THESE DEVISES. My initial review was very positive, a huge MISTAKE. After less than 2 months of use, both units LEAK AIR AT THE FILTER BOWLS, the GAUGES BOTH LEAK AIR, the Very FRAGILE BOWL AIR RELEASE VALVES LEAK, and Neither Devise helps to remove water or condensation from my shop pneumatic system. These are just another piece of foreign JUNK. Cheaply made with cheap plastic parts, BUYER BEWARE, these devises are not worth your $ investment, and constant air component air leaks causing my compressor to run on very frequent cycles. JUNK WITH A HIGH PRICE. Don’t waste your hard earned $$ with this company’s JUNK PRODUCTS . Spend a little more, and get a better quality devise. A TOTAL WASTE OF MY MONEY! ... show more
Reviewed in the United States on October 14, 2022 by RCC
    • All around a terrific little system
Size: 1/4" NPT Style: 5 μ
I was really impressed with this unit. All the fittings I needed were included, plumber's tape (though it is really thin), and it came mostly assembled. The way they designed this makes each module interchangeable. I actually removed the module with the pressure gauge to do a pressure test, everything worked perfect without the filters attached. The included instructions are very brief and not translated well. Fortunately everything is marked with arrows for flow on the top of each module and the regulator has indications of how to lock as well increase/decrease pressure. The two reasons I marked this as 4 stars rather than 5: the filter drain valve assemblies and small air leaks. *For my small airbrush compressor, the drain valves do not close by themselves. I have to manually hold them shut in order for the filters to build pressure to hold them closed. Its a little annoying but still functional. *I'm also have issues with the fittings and modules holding pressure (compressor discharge is 57psi rated, gauge shows approximately that). With the supplied plumber's tape and the supplied fittings, I cannot hold pressure. I have a slow leak that short cycles my compressor. All the fittings are tightened except the pressure gauge which is very difficult to get a wrench on due to the small clearance between the gauge and the body. I have hand tightened it as far as I can. Recommendations to the manufacturer: *I would recommend either including a thin wrench that allows you to tighten the pressure gauge or install the gauge at the factory. *I would upgrade the plumber's tape to something a bit more robust. If it leaks at 60psi, I can imagine what others are experiencing. *Change the spring in the drain valves so low pressure/flow compressors can close the valves without manual interaction. ... show more
Reviewed in the United States on October 20, 2020 by Darth Geek
    • NANPU DFR-02 for air brush
Size: 1/4" NPT Style: 5 μ
Great value for this little set. I replaced the included gauge with a better quality 0-50 psi gauge for my specific air brush application. I just tapped into my normal 125 psi system with this unit to regulate and provide evern better filtering and de-watering.
Reviewed in the United States on August 15, 2026 by Jack J. Goode
    • It works very well and includes everything needed for installation.
Size: 3/8" NPT Style: 5 μ
I am very pleased with this set up. I really like that it comes in several inlet/outlet sizes and volumes. Make sure you choose the correct size and volume for your application. It seems to be a good quality product for the money and I used it to replace a simpler Craftsman one that I had originally installed on my airlines. the tank on my Craftsman failed so I thought I would try this set up instead. It has a nice mounting design, comes with all the necessary fittings and even some Teflon tape. Time will tell, but for now I am thrilled and I will probably add several to my shop airlines where I work. ... show more
Reviewed in the United States on January 22, 2025 by Prakash
    • Every fast delivery and good quality
Size: 3/8" NPT Style: 5 μ
Every fast delivery and good quality
Reviewed in the United States on August 18, 2026 by DAN SIMMONS
    • Works Well, Minor Quality Control Problems.
Size: 3/8" NPT Style: 5 μ
I was having major moisture issues with my air supply. I installed this setup and that has virtually eliminated my problems. I've been running it for a few weeks and the only time I've gotten moisture was when I didn't drain the bowls soon enough. I do wish the bowls were a little larger. They work well to trap moisture but fill up quickly for me. That said, if I make sure to drain them once or twice a day, they are fine. The worst problem I had is that they missed something when making mine. Namely there is a port for Pressure Gauge to attach to on the Regulator. However it wasn't drill through. It WAS drilled and tapped for the gauge, but there was no hole into the air passage. So the gauge wouldn't read any pressure until I drill a small hole myself. That was the ONLY problem I've had with this setup. Well that and the lack of ANY instructions. Would have rated this 4 or maybe even 5 stars due to the Price and How well it works, but the fact that they missed drilling a very important hole is a pretty big strike against them on this one. ... show more
Reviewed in the United States on July 4, 2020 by HotRodHippie
    • Good Air line filter/regulator
Size: 3/8" NPT Style: 5 μ
Review Image by BruceC
Works as intended. No leaks, easy to drain, no problems with the gauge or regulator Using this to futher filter and step down the pressure on our warehouse air system, from 135psi to 60psi. Mounted to the side of a ballast tank. Plumbed with 3/8" 800PSI Pneumatic tubing. Perfect for my need.
Reviewed in the United States on January 28, 2026 by BruceC

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