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Concealed Air Admittance Valve with Cover
Concealed Air Admittance Valve with Cover
In-wall air admittance valve for concealed drainage ventilation. The assembly contains a removable valve cartridge for servicing and is supplied with a finishing cover for the wall opening.
Technical specifications
| HL article | HL905N |
|---|---|
| Application | Air admission for soil and waste drainage systems |
| Installation | In-wall mounted |
| Material | Polypropylene (PP) and ABS |
| Connection | DN50 / DN75 |
| Air admission capacity | 13 l/s |
| Product weight | 383 g |
| Standard / reference | EN 12380-A1 |
| Features | Concealed wall housing; removable functional cartridge; supplied protective and finishing covers |
| Manufacturer | HL Hutterer & Lechner, Austria |
Models and official HL technical drawings
| Article code | Connection | HL specification and drawing |
|---|---|---|
| HL905N | DN50 / DN75 | 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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