Product Features
1. Excellent resistance to aging and corrosion
2. Easy to maintain
3. Long-lasting performance
4. Low pressure loss
5. High oxygen transfer efficiency and energy-saving design
Typical applications
Designed with a unique split pattern and precisely engineered slits, this diffuser disperses fine and uniform air bubbles, enhancing oxygen transfer efficiency.
A high-performance integrated check valve allows easy on/off air control in different aeration zones, making it ideal for intermittent aeration systems.
The membrane operates reliably across a wide airflow range and requires minimal maintenance, ensuring consistent long-term performance.
Technical Parameters
| Model | HLBQ-215 | ||||
| Bubble Type | Fine Bubble | ||||
| Image |  |
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| Size | 8 inch | ||||
| MOC | EPDM/Silicone/PTFE – ABS/Strengthened PP-GF | ||||
| Connector | 3/4" NPT male thread | ||||
| Membrane Thickness | 2 mm | ||||
| Bubble Size | 1–2 mm | ||||
| Design Air Flow | 1.5–2.5 m³/h | ||||
| Operating Flow Range | 1–6 m³/h | ||||
| SOTE | ≥ 38% | ||||
| (at 6 m water depth) | |||||
| SOTR | ≥ 0.31 kg O₂/h | ||||
| SAE | ≥ 8.9 kg O₂/kW·h | ||||
| Headloss | 1500–4300 Pa | ||||
| Service Area | 0.2–0.64 m² per unit | ||||
| Service Life | > 5 years | ||||
Product Video
Take a look at the video below to explore Holly’s core aeration solutions.
