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Aro-Flo Series Air Line Filter, 3/8 NPT Ports, 5 micron Element, 156 SCFM Flow Rating, 1.9 oz Bowl Capacity, Manual Drain

Description & Features

Designed for optimal performance the Aro-Flo Series Air Line Filter features 3/8 NPT Ports and a 5 micron Element. Ensuring efficient contaminant removal it supports a 156 SCFM Flow Rating with a 1.9 oz Bowl Capacity and includes a Manual Drain for ease of maintenance. Engineered with an aluminum body and a nylon bowl guard this filter withstands high-pressure environments with a maximum inlet pressure of 150 psi for polycarbonate bowls and 250 psi for metal bowls.

Supplier Part Number: F35331-400

Adaptable to various applications it can be installed with different filter elements including coalescing models capable of removing oil aerosols and particles down to 0.3 micron. The filter prefers an installation sequence of filter regulator and lubricator for optimal performance. For temperature ranges it operates efficiently within 23-125F for polycarbonate bowls and 23-175F for metal bowls. Constructed to handle demanding conditions it comes with nitrile seals and a brass + nitrile manual drain. The Aro-Flo combination FRLs are easily assembled using modular spacer kits and can be ordered with alternative springs to meet specific air regulating needs making it a versatile choice for pneumatic power and control systems.

Specifications

Brand ARO®	Bowl Material Polycarbonate	Connection Type NPT	Drain Type Manual	Filter Material Polyethylene	Series 2000 Series	Sg Combinations Filters, Regulators, Lubricators and Piggybacks Can be Combined Together to Form Combinations, They are Typically Strung Together in the F+r+l Arrangement (Three-piece Combo) and F/r+l (Two-piece Combo) Arrangement, Although Other Configurations are also	Sg Filters Aeroflot Compressed Air Filters are Designed to Remove Airborne Solid and Liquid Contaminants, Filters Can be Ordered with Different Elements, Including Coalescing Models Which are Capable of Removing Oil Aerosols and Particles down to 0.3 um, Standard Fi	Sg Installation The Filter, Regulator and Lubricator Should be Installed in That Order, if A Coalescing Filter is Required, it Should be Installed Downstream from A Standard Filter, Individual Take-off Lines to the Frl and Air Tool or Equipment Should be from the Top of	Sg Lubricators Aeroflot Mist-type Lubricators Help Ensure That Pneumatic Devices Receive the Required Lubrication to Maintain Peak Performance, Reduce Wear and Prolong Service Life, They are Designed to Provide the Correct Amount of Oil Required for Most General Applica	Sg Piggyback Filters Regulators Filter-regulators or "Piggybacks", Combine the Functions of Both A Filter and Regulator, Piggybacks are Compact and Most Effective when Space is A Constraint, Piggybacks Can be Ordered with Different Filter Elements and Can be Modified with Different Spri	Sg Regulators Air Line Regulators Provide Controlled, Consistent Air Pressure as Required for Specific Pneumatic Equipment Connected to the Air System, All Aro-Flo Regulators are Offered with A Standard Adjustment Range of 0 to 140 psig, Alternative Spring Ranges are O

Similar Products

Model Number	Series	Flow Rating (SCFM)	Element	Drain Type	Bowl Capacity	Dimensions
F35121-400 Aro-Flo Series Air Line Filter	1000	49	5 micron	Manual	0.5 oz	1.58W x 4.30H
F35221-400 Aro-Flo Series Air Line Filter	1500	73	5 micron	Manual	1.2 oz	2.21W x 6.16H
F35331-410 Aro-Flo Series Air Line Filter	2000	156	5 micron	Manual	2.4 oz	2.76W x 7.05H
F35341-400 Aro-Flo Series Air Line Filter	2000	197	5 micron	Manual	1.9 oz	2.76W x 7.05H
F35341-410 Aro-Flo Series Air Line Filter	2000	197	5 micron	Manual	2.4 oz	2.76W x 7.05H
F35451-420 Aro-Flo Series Air Line Filter	3000	288	5 micron	Manual	5.3 oz	3.54W x 9.93H

Product Questions & Answers (2)

Question by: Pete G on Feb 14, 2026, 11:35 AM

my air compressor runs pretty dirty lines and i'm always fighting rust and water in my tools. will a 5 micron filter actually catch enough of that junk, or do i need something finer?

Answer by: Customer Support on Feb 16, 2026, 6:22 AM

For most solid particulate and water contamination coming off a typical shop compressor, a 5 micron element handles the bulk of it just fine. Where you'd need to step up is if oil aerosols are a concern. This filter can actually be swapped to a coalescing element that pulls oil aerosols and particles down to 0.3 micron, so you've got room to upgrade without replacing the whole unit. The 40 micron element is also available separately if you ever need coarser prefiltration upstream. For a dirty line situation, pairing a standard 5 micron stage with a downstream coalescing filter in the F-R-L sequence would give you solid protection across the board.

Question by: Brett P on Nov 21, 2025, 1:54 PM

Reckon this'll work good for my garage air setup? Need somethin' that can handle a bit of work.

Answer by: Customer Support on Nov 22, 2025, 5:21 PM

For garage air setups, this filter's aluminum body and nylon bowl guard are built to withstand high-pressure environments, with a max inlet pressure of 150 psi for polycarbonate bowls and 250 psi for metal bowls.