FS-Curtis RNB300 Non-Cycling Refrigerated Dryer 300 SCFM #FRNBX00300-4XA5XX

FS-Curtis RNB300 — 300 SCFM Refrigerated Air Dryer

A facility feeding multiple work areas from one central compressed air header needs a dryer that won't introduce a pressure drop bottleneck at that volume — the RNB300 is engineered for that kind of centralized, higher-draw system.

That's what the FS-Curtis RNB300 solves — a 300 SCFM non-cycling refrigerated dryer, designed to hold steady performance day after day without needing constant adjustment or monitoring. It's also available with a factory-matched Filter Package (prefilter CF7-36-12-DGL + afterfilter CF5-36-12-DGL) as an add-on option, which bundles the exact filtration this dryer's flow rate calls for, so nothing needs to be cross-referenced against a separate catalog.

Who the RNB300 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 RNB300 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 RNB300 Different

Heat Exchanger

The RNB300 uses a stainless steel brazed plate heat exchanger, engineered for reliable, consistent dew point control at 300 SCFM without fouling or excess pressure drop.

Condensate Drain

Timed electric drain removes collected moisture automatically — the electric timer takes care of it automatically, with no valve for a tech to remember.

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 (CF7-36-12-DGL) and afterfilter (CF5-36-12-DGL), sized to this dryer's flow rate and ready to plumb — one less step for your install crew.

Full Specifications — RNB300

FS-Curtis Warranty — RNB300

FS-Curtis backs the RNB300 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.