One impeller. Oil-free air. Six names.

Buyers in different industries learned the same machine under different labels, so the market carries six. Search for any of them and you land on the YEBL-1. The physics is identical — a single radial-vaned impeller spinning inside a crescent-shaped side channel. Understanding the names keeps you from over-buying a two-stage unit when a ring blower is exactly what your process needs.

• Ring blower — The side channel forms a ring around the impeller.
• Side channel blower — Names the channel that regenerates the flow.
• Regenerative blower — Energy is added regeneratively, pass after pass.
• Turbine blower — The bladed impeller reads like a turbine wheel.
• Vortex blower — Air spins in a vortex between vane and channel.
• Vacuum blower — Run off the suction port, it is a vacuum source.

Fix the pressure or vacuum you must hold first: across the YEBL-1 range pressure spans 100 to 460 mbar and vacuum -100 to -340 mbar. Then size on airflow. The 24 trims cover 80 to 1370 m³/hr on 0.25 to 24.5 HP, so the same airflow is available at more than one power rating — the higher-power trim is the one that holds the higher pressure.

Mount the blower on a flat, rigid base with the shaft horizontal unless the datasheet permits otherwise, and leave clear space around the motor fan cowl — these machines are air-cooled and a blocked cowl is the most common cause of a nuisance thermal trip. Always fit a relief valve sized to the duty so the unit can never run fully dead-headed; a regenerative blower with a closed port converts all its shaft power into heat within minutes.

Fit an inlet filter and keep it clean. The tight running clearance that makes the blower efficient is the same clearance that a swallowed particle will score. On vacuum duty, protect the suction line from liquid carry-over. Support the pipe so its weight never hangs on the blower flanges, and use a short flexible connector to keep motor vibration and pipe strain apart.

Service interval, briefly

• Check / clean inlet filter — weekly to monthly by dust load.
• Confirm relief-valve setting and listen for pulsation on start.
• Re-grease / replace motor bearings on the hour schedule.
• Verify current draw against nameplate — a rising amp reading flags a clogged filter or a restricted line.
• Inspect impeller clearance at overhaul; swap from YEBL-IMP if scored.

• Effluent & STP aeration — Oil-free diffused-air aeration in sewage and effluent treatment. The 3–10 HP pressure trims feed fine-bubble diffusers at the 250–380 mbar most tank depths need.
• Aquaculture & biofloc — Continuous pond and biofloc aeration where any oil in the air would kill stock. Reliable 24/7 duty is the whole requirement, and the ring blower is built for it.
• Pick-and-place vacuum — Run off the suction port, mid trims hold vacuum for pick-and-place, printing feed tables, labelling and packaging lines that lift sheet and film on a vacuum cup.
• Pneumatic conveying — Low-pressure dilute-phase conveying of powders and granules — dosing, de-dusting and vacuum lifting in food, plastics and pharma plants.
• Electroplating agitation — Air agitation of plating and rinse tanks. Oil-free air keeps the bath chemistry clean while high flow rolls the solution evenly across the work.
• CNC & soldering extraction — Vacuum hold-down on routers and vacuum de-solder / fume draw on electronics benches, where compact, quiet, oil-free air is worth more than raw pressure.