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Air Admittance Valve with Double Insulation and DN50/75 Reducer
Air Admittance Valve with Double Insulation and DN50/75 Reducer
Air admittance valve for internal ventilation of soil and waste drainage systems. Its insulated DN110 body, removable insect protection and supplied reducer provide connection options for DN50 and DN75 pipework.
Technical specifications
| HL article | HL900N |
|---|---|
| Application | Air admission for soil and waste drainage systems |
| Installation | Surface mounted |
| Material | Polypropylene (PP) |
| Connection | DN50 / DN75 / DN110 |
| Air admission capacity | 37 l/s |
| Product weight | 485 g |
| Standard / reference | EN 12380-A1 |
| Features | Double-wall insulation; removable insect screen; rubber membrane; DN50/75 reduction insert |
| Manufacturer | HL Hutterer & Lechner, Austria |
Models and official HL technical drawings
| Article code | Connection | HL specification and drawing |
|---|---|---|
| HL900N | DN50 / DN75 / DN110 | Official HL product page | Technical drawing (PDF) |
Refer to the linked HL product pages for model-specific dimensions, rated flow capacities, and PDF technical drawings.
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