3/8ft NPT Air Drying System - Double Air Filters Regulator Combo

Our review of the 3/8' NPT Air Drying System finds it best suited to hobbyists, small shops, and anyone who needs a compact, ready-to-install filtration and regulation solution for simple air tools. The single biggest reason to buy is its combination of a double 5 micron brass filter element and a piggyback regulator that delivers reliable filtering and easy pressure control without requiring separate components, making setup fast and keeping tool air cleaner during typical shop tasks.

Key Features

• 3/8' NPT Piggyback Combo: Integrates filter and regulator in one unit so users save space and simplify plumbing during installation.
• Double 5 Micron Brass Filter: Provides fine particle removal with durable brass elements that are easier to clean and reuse for longer service life.
• Flow Rate: Rated at 70 SCFM (about 2000 L/min) at 90 psi, which is adequate for most small compressors and common air tools.
• Semi-Auto Drain and Poly Bowl: The semi-auto drain and polycarbonate bowl with metal guard allow convenient moisture removal and visual inspection of collected water and debris.
• Complete Installation Kit: Ships with gauge and bracket, metal coupler and plug kit, fittings, and thread seal tape so it is ready to mount and use out of the box.
• Wide Temperature Range: Operates between 41-140F (5-60C), suitable for typical workshop environments without special heating or cooling.

Who It's For

This unit is aimed at home mechanics, small fabrication shops, and DIYers who run airbrushes, nailers, impact wrenches, and other light to medium air tools that benefit from cleaner, regulated air. Its compact piggyback design is ideal where space is limited and a simple, integrated solution is preferred over separate components.

Those who need heavy industrial flow, continuous high-demand operation, or maximum leak-free performance under rigorous use may want a more heavy-duty commercial regulator/filter or higher-spec plumbing. Also, users requiring stainless materials for corrosive environments should look elsewhere.

Pros & Cons

Pros

• Good filtration performance from the dual 5 micron brass elements that are reusable and offer longer life.
• Complete kit including gauge, fittings and couplers makes installation straightforward and fast.
• Solid flow rating of 70 SCFM at 90 psi meets the needs of many small shops and common air tools.
• Polycarbonate bowl with metal guard and semi-auto drain improves safety and maintenance convenience.

Cons

• Some customers report occasional air leakage, particularly around the gauge, so careful assembly and thread sealing are important.
• Build quality feedback is mixed; a few users found components less robust under heavy use.

Specifications

Connection Size	3/8' NPT
Filter Element	Double 5 micron brass
Flow Rate	70 SCFM (2000 L/min) @ 90 psi
Operating Pressure	0-125 psi
Max Supply Pressure	145 psi
Temperature Range	41-140F (5-60C)
Included Accessories	Gauge & bracket, coupler & plug kit, 2 x 3/8' NPT fittings, thread seal tape

Our Verdict

The 3/8' NPT Air Drying System is a practical, cost-effective combo for DIYers and small shops that need cleaner, regulated air without complex installation. It delivers good filtration and a useful flow rate with convenient accessories, making it strong value for typical light to medium workshop use, though buyers should check fittings for leaks and be aware it is not designed as a heavy industrial unit.

Frequently Asked Questions

Does this unit come with fittings and tape?
Yes, it includes 2 x 3/8' NPT fittings and a roll of thread seal tape so the unit can be plumbed in immediately.

Can it handle my compressor output?
The unit is rated to 70 SCFM at 90 psi and a max supply of 145 psi; it suits most small compressors and air tools but not very high-demand industrial systems.

Is the bowl durable and safe?
The bowl is polycarbonate with a metal guard and the model includes a semi-auto drain for routine moisture removal and visual inspection.