FS-Curtis RNB500 Non-Cycling Refrigerated Dryer 500 SCFM #FRNB00500-4XA5XX

FS-Curtis RNB500 — 500 SCFM Refrigerated Air Dryer

A facility with serious, continuous industrial air demand needs a dryer built for round-the-clock duty, not intermittent shop use — the RNB500 sits at the point in the lineup where that becomes the primary design consideration.

That's what the FS-Curtis RNB500 solves — a 500 SCFM non-cycling refrigerated dryer, a dryer that quietly does its job in the background, keeping tools and finish work protected from wet air. It's also available with a factory-matched Filter Package (prefilter CF7-44-20-DG + afterfilter CF5-44-20-DG) as an add-on option, which lets your crew skip the filter-sizing lookup entirely — FS-Curtis already matched the pair to this model's flow rate.

Who the RNB500 Is Built For

• ✅ An industrial facility or large commercial shop running a high-output rotary screw compressor that needs matched, continuous-duty drying capacity
• ✅ An operation with a centralized compressed air system feeding multiple work areas, production lines, or bays from one header
• ✅ A facility that needs dependable, round-the-clock dew point control at high SCFM without the pressure drop that undersized filtration or dryers introduce
• ✅ A plant manager replacing an aging industrial dryer who needs the new unit to match or exceed the old one's throughput without a costly re-pipe of existing 2-inch/3-inch/4-inch flanged connections
• ✅ An operation where compressed air system downtime for dryer service is expensive, making reliability and manufacturer-backed 2-year coverage a real purchasing factor, not an afterthought

What the RNB500 Is NOT Built For

• ❌ Small or mid-size shops — this tier is sized for industrial-volume air systems and is oversized, and overpriced, for a single-bay or light commercial operation
• ❌ Facilities without existing 3-phase power infrastructure or the floor space and flanged/NPT piping this unit's footprint and connections require

What Makes the RNB500 Different

Heat Exchanger

The RNB500 uses a stainless steel brazed plate heat exchanger, engineered for reliable, consistent dew point control at 500 SCFM without fouling or excess pressure drop.

Condensate Drain

Timed electric drain removes collected moisture automatically — the electric cycle runs on its own, so condensate never has a chance to accumulate unnoticed.

Refrigerant & Air Quality

Uses R513A refrigerant, a low global-warming-potential option, and delivers ISO 8573-1:2010 Class 4–5 pressure dew point — dry, reliable air for general shop and industrial use.

Optional Filter Package

Choose the “Includes Filter Package” option to add a factory-matched prefilter (CF7-44-20-DG) and afterfilter (CF5-44-20-DG), sized to this dryer's flow rate and ready to plumb — one less step for your install crew.

Full Specifications — RNB500

FS-Curtis Warranty — RNB500

FS-Curtis backs the RNB500 with a 2-year parts & labor warranty.

Warranty service is through Alamo Equipment & Service — call (844) 480-6059 instead of waiting on a manufacturer hotline. Coverage is subject to FS-Curtis warranty terms, conditions, and requirements.