Regenerative Blowers for Low Pressure and Low Vacuum
Compact, oil free air for continuous low pressure duty, sized and serviced from 14 Midwest locations.
Is a regenerative blower right for my application?
A regenerative blower is the right choice for continuous low pressure or low vacuum duty at modest flow where you want a compact, quiet, oil free unit with almost no maintenance. It suits aeration, agitation, vacuum hold down, air knives, and drying. When the duty needs higher flow or pressure than a regenerative unit can hold, step up to a rotary lobe blower. Send us your flow and pressure and Brabazon will confirm the fit before quoting a brand.
How a regenerative blower works
A regenerative blower produces pressure through a clever recirculating action rather than simple displacement. A single impeller carries many small radial blades and spins inside a ring shaped housing channel. Air entering the channel is caught by a blade, flung outward and forward, then guided by the housing back into the next blade, so the same air is worked over and over as it travels around the ring. Each pass adds a little energy, and those small gains add up to useful low pressure or, with the ports reversed, low vacuum. Because the design has only one moving part, needs no lubrication in the air path, and never lets metal contact metal, it runs oil free, quiet, and reliably in a compact package.
When to specify a regenerative blower
Specify a regenerative blower for clean, continuous duty that calls for modest flow at low pressure or low vacuum. Common fits include small scale aeration and agitation, vacuum hold down on printing and packaging equipment, feeding compact air knives, drying and blow off, and providing the air or vacuum inside packaged machinery. The oil free operation makes it a natural choice where the air must stay clean, and the quiet, compact form factor suits it to installation close to the point of use. The trade off is range: a regenerative blower covers a limited pressure and flow band, so once the duty grows a rotary lobe blower takes over.
Sizing a regenerative blower
Size a regenerative blower to the flow you need at the actual system pressure or vacuum, staying within its performance band. Read the pressure or vacuum off the blower curve at your required flow rather than the free air rating, and confirm the working point sits comfortably inside the curve, not at its extreme edge where the unit runs hot and inefficient. Account for inlet temperature, altitude, and filter losses, since each shifts the delivered performance. If the required duty falls near the top of the curve, that is a signal the application may have outgrown regenerative technology. Confirm the motor is rated for continuous operation at your working point, since these blowers commonly run around the clock.
Service and reliability
Regenerative blowers are among the lowest maintenance air movers because they have a single moving part and no oil in the air stream. The routine care that matters is keeping the inlet filter clean and the discharge unobstructed, since the impeller runs at close clearances and cannot tolerate ingested liquid or debris. Sealed bearings are the primary wear item and are replaced periodically. Heat is the other enemy: an undersized unit run at the edge of its curve, a clogged filter, or poor ventilation raises operating temperature and shortens life. Keep the blower cool, filtered, and clear and it will run for years. Our technicians service and rebuild regenerative blowers when the time comes.
Regenerative blower lines available through Brabazon
Brabazon supplies regenerative blowers from Airtech and Becker. We size the blower to your flow and pressure or vacuum rather than starting from a brand, then support it with parts and service.
Regenerative blower questions, answered first
How does a regenerative blower work?
A regenerative blower uses a single impeller with many small blades that spin air in a repeating spiral path through a ring shaped housing. As air passes each blade it gains a little energy, and because the housing channel guides it back into the impeller again and again, the pressure builds up in stages across one pass. This regenerative action produces useful low pressure or low vacuum in a compact, oil free unit with only one moving part.
What is a regenerative blower used for?
A regenerative blower is used for continuous low pressure or low vacuum duty at modest flow, such as aeration, agitation, vacuum hold down, air knives, and drying. Its compact size, quiet oil free operation, and single moving part make it a good fit for packaged equipment and clean applications. When the duty needs higher flow or pressure than a regenerative unit can hold, a rotary lobe blower is the next step.
What maintenance does a regenerative blower need?
A regenerative blower needs very little maintenance because it has one moving part and no oil, so routine care centers on keeping the inlet filter clean and the discharge clear. Sealed bearings are the main wear item and eventually need replacement. Because the impeller runs at close clearances, protect it from liquid and debris with proper filtration, since ingested material is the most common cause of failure. Keep the unit cool and unobstructed for long life.
When should I choose a rotary lobe blower instead?
Choose a rotary lobe blower instead when your duty exceeds the flow or pressure a regenerative blower can hold. Regenerative units are ideal for compact low pressure and low vacuum service at modest flow, but higher volume aeration and pneumatic conveying belong to positive displacement lobe blowers. If you are unsure where the line falls, send your flow and pressure and we will match the technology. See our rotary lobe blower page for higher duty.
Talk to a blower engineer about your duty
Send your flow, pressure or vacuum, and application and an engineer will size the right regenerative blower, then quote sale, rebuild, or service. We answer 24/7.
Request a regenerative blower quote
Tell us your flow, pressure or vacuum, and application and a specialist will size and quote the right blower. Or call 800.825.3222, answered 24/7.
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