Fine Bubble Disc
Diffusers
LiTENDA disc diffusers deliver consistent fine-bubble aeration with low pressure loss and high oxygen transfer efficiency — built on a UV-stable membrane and reinforced ABS base for years of reliable service in municipal and industrial tanks.
What is a
Disc Diffuser?
A disc diffuser is a flat, circular aeration membrane mounted on a base plate at the bottom of a treatment tank. Compressed air pushes through thousands of micro-perforations in the membrane, producing a uniform field of fine bubbles that maximize the surface area available for oxygen to dissolve into the water.
LiTENDA's disc diffusers pair a UV-stabilized, anti-scaling membrane with a reinforced ABS base plate, and use a shaped slit pattern engineered to resist tearing and clogging over years of continuous operation.
Available in three disc sizes and multiple membrane materials, the lineup covers everything from compact package plants to large municipal aeration basins — with free sizing support to match your tank depth and oxygen demand.
Free sizing support — send your tank depth and flow data for a tailored disc diffuser layout.
Disc Diffuser Advantages
Every component is chosen to keep oxygen transfer high and operating costs low across the diffuser's working life.
Disc Diffuser Specifications
Crown-type and flat-type disc diffusers across multiple diameters to match your tank and load.
| Parameter | WF215 | WF260 | WF300 | WF-F215 | WF-F260 | WF-F330 | WF-A9 |
|---|---|---|---|---|---|---|---|
| Bubble Type | Fine Bubble | ||||||
| Plate Diameter (mm) | 200 | 260 | 300 | 215 | 260 | 332 | 264 |
| Membrane Diameter (mm) | 200 | 260 | 290 | 175 | 215 | 290 | 220 |
| Membrane Material | EPDM / Silicone | ||||||
| Base Material | ABS | ||||||
| Connector | 3/4" NPT Male Thread | ||||||
| Weight (kg) | 0.3 | 0.55 | 0.76 | 0.37 | 0.49 | 0.9 | 0.55 |
| Membrane Thickness | 2 ± 0.2mm | ||||||
| Bubble Size (mm) | 1–2 | ||||||
| Suggested Flow (m³/h) | 2 | 3 | 4 | 2 | 3 | 4 | 3 |
| Flow Range (m³/h) | 1–3 | 2–4 | 2–6 | 1–3 | 2–4 | 2–6 | 2–4 |
| SOTE (6m submerged) | ≥ 34% | ||||||
| SOTR (kgO₂/h) | ≥0.27 | ≥0.55 | ≥0.52 | ≥0.27 | ≥0.55 | ≥0.52 | ≥0.35 |
| SAE (kg/kW·h) | ≥8.8 | ≥8.7 | ≥8.4 | ≥8.8 | ≥8.7 | ≥8.4 | ≥8.7 |
| Headloss (kPa) | ≤4.0 | ≤4.0 | ≤4.0 | ||||
| Service Area (m²/pc) | 0.25–0.4 | 0.3–0.5 | 0.3–0.6 | 0.25–0.4 | 0.3–0.5 | 0.3–0.6 | 0.3–0.5 |
| Service Life | 5+ years | ||||||
Membrane Materials Compared
The membrane decides bubble size, chemical resistance, and fouling behavior — pick the right one for your wastewater profile.
Not sure which disc size or membrane fits your tank?
Send us your tank depth and flow rate — our engineers will recommend the right disc diameter and membrane material, free of charge.
Benefits of Fine-Bubble Aeration
Disc diffusers concentrate oxygen transfer where it matters most, making them the standard choice for efficiency-focused aeration tanks.