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Aro-Flo Series Air Line Filter, 1/4 NPT Ports, 5 micron Element, 73 SCFM Flow Rating, 1.2 oz Bowl Capacity, Manual Drain

Description & Features

Designed for compressed air filtration in pneumatic systems, the Aro-Flo Series Air Line Filter, 1/4 NPT Ports, 5 micron Element, 73 SCFM Flow Rating, 1.2 oz Bowl Capacity, Manual Drain removes airborne solid and liquid contaminants from the air supply before they reach downstream equipment. The 5-micron polyethylene filter element handles general-purpose filtration, while coalescing elements rated to 0.3 micron are available separately for oil aerosol removal.

Part of Ingersoll Rand Aro's 1500 Series, this filter features an aluminum body with a polycarbonate bowl rated to 150 psi at temperatures between 23°F and 125°F. The manual drain allows collected contaminants to be expelled as needed. At 2.21 inches wide and 6.16 inches tall, the compact footprint suits space-constrained installations. The unit is modular-compatible with Aro-Flo regulators and lubricators for F+R+L combination assemblies using standard spacer kits.

SKU: F35221-400

Supplier Part Number (MPN): F35221-400

Alternate Part Numbers: C1KL47

Specifications

Brand ARO®	Bowl Material Polycarbonate	Connection Type NPT	Drain Type Manual	Filter Material Polyethylene	Series 1500 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
F35331-400 Aro-Flo Series Air Line Filter	2000	156	5 micron	Manual	1.9 oz	2.76W x 7.05H
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: Roy M on Jan 20, 2026, 1:24 PM

Will this little filter handle the moisture coming out of my compressor, or do I need a whole separate water trap?

Answer by: Customer Support on Jan 22, 2026, 6:45 AM

Designed for compressed air filtration, this unit removes airborne solid and liquid contaminants from your air supply. It's a good general-purpose filter. For heavy moisture, you might still consider a dedicated water trap upstream.

Question by: Brett M on Aug 6, 2025, 9:25 AM

got a little air tool setup in the shop. is this filter gonna keep the water and gunk out before it hits my regulator?

Answer by: Customer Support on Aug 7, 2025, 6:51 PM

Upstream filtration is exactly what it’s for. It strips out airborne solid and liquid contaminants before they reach downstream equipment, and it’s meant to be installed in the usual order of filter, then regulator, then lubricator if you’re running one.