NANPU 3/4 in NPT Air Filter Regulator Lubricator Combo - Reliable FRL

In this review of the NANPU 3/4 in NPT Compressed Air Filter Regulator Lubricator Combo, the bottom line is simple: this FRL is best for workshops and light industrial use where a compact, piggyback unit that filters water and oil and maintains steady pressure is needed. The unit stands out for its 5 micron brass filter element, solid flow capacity, and inclusion of practical accessories, making installation straightforward for an end user who wants a durable, serviceable air treatment component without complex plumbing work.

Key Features

• 3/4 in NPT piggyback design: combines filter, regulator and lubricator in a compact package to save space and simplify piping.
• 5 micron brass filter element: captures fine particulates while offering longer life and reuse feasibility compared with disposable elements.
• High flow rate: delivers up to 105 SCFM (3000 L/min) at 90 psi so it can support multiple air tools or a small shop manifold.
• Semi-auto drain and polycarbonate bowl: eases water removal while the metal guard protects the bowl from impact in a workshop environment.
• Included gauge, fittings and tape: the 0-150 psi gauge, metal bracket, 2 x 3/4 in NPT fittings and thread seal tape help make installation quicker and reduce the number of extra parts to buy.

Who It's For

This unit is aimed at hobbyist mechanics, small fabrication shops and maintenance teams that need a reliable, space-saving filter regulator lubricator combo to protect tools and maintain consistent air pressure. It is particularly useful where filtering water and oil from compressed air is important and where users want a reusable brass element rather than frequent replacements.

Those who should look elsewhere include facilities requiring very high flow at pressures beyond 125 psi or applications demanding stainless steel bowls or specialized fittings. Also consider a different model if absolute leak-free performance under heavy vibration is critical, as a few users reported fit and casting concerns in rough service.

Pros & Cons

Pros

• Good filtration with a 5 micron brass element that offers durability and reuse.
• High flow capability (105 SCFM at 90 psi) suitable for small shop setups.
• Convenience features such as the semi-auto drain, metal guard and included gauge and fittings speed installation.

Cons

• Some reports note occasional leakage or fit issues on cast parts and missing fittings in rare cases, so inspect fittings on arrival.

Specifications

Connection Size	3/4 in NPT
Operating Pressure	0-125 PSI
Gauge Range	0-150 PSI
Filter Element	5 micron brass
Flow Rate	105 SCFM (3000 L/min) @ 90 psi
Bowl	Polycarbonate with metal guard and semi-auto drain
Included Accessories	2 x 3/4 in NPT fittings, bracket, thread seal tape

Our Verdict

The NANPU 3/4 in NPT FRL combo is a practical, cost-effective choice for small shops and maintenance crews that need dependable filtration, pressure control and lubrication in a single compact unit. With a durable 5 micron brass element, good flow capacity and useful installation accessories, it offers strong value for routine compressed air treatment, provided the user checks fittings and mounting after delivery.

Frequently Asked Questions

Is this unit suitable for running multiple air tools?
The unit supports up to 105 SCFM at 90 psi, so it can handle several light to medium air tools on a small distribution line but check your tools combined demand first.

How is water removed from the bowl?
The unit includes a semi-auto drain and a polycarbonate bowl with a metal guard to protect it while allowing easy draining of separated water.

Are replacement elements available?
The 5 micron brass filter element is reusable and designed for longer life; cleaning and inspection will extend service intervals compared with disposable cartridges.