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![Photo Hutterer & Lechner Air admittance valve 1' with tee DN40 [Code number: HL 902T/40]](/system/products/photos/000/005/199/original/hl_902t_40-photo.jpg?1461296523)
Air admittance valve HL 902T/40 with DN40 is installed on non-ventilated sewer risers. The device protects the room against polluted air. Also, the air admittance valve protects sanitary devices against disruption of water trap. It is equipped with T-connection with two locking nuts.
| Diameter | Material | Weight |
|---|---|---|
| DN, mm | gr | |
| 40 | polypropylene | 80 |
![Draft Hutterer & Lechner Air admittance valve 1' with tee DN40 [Code number: HL 902T/40]](/system/products/drafts/000/005/199/original/hl_902t_40-draft.jpg?1461294438)
![Photo Hutterer & Lechner Locking nut, 6/4" [Code number: HL 01047D]](/system/products/photos/000/004/043/original/hl_01047d-photo.jpg?1461296609)
![Photo Hutterer & Lechner Gasket wedge shaped, DN40 [Code number: HL 01008D]](/system/products/photos/000/004/039/original/hl_01008d-photo.jpg?1461296499)
![Photo Hutterer & Lechner Air admittance valve, 1' [Code number: HL 902]](/system/products/photos/000/005/197/original/hl_902-photo.jpg?1461296522)
![Draft Hutterer & Lechner Air admittance valve, 1' [Code number: HL 902]](/system/products/drafts/000/005/197/original/hl_902-draft.jpg?1461294437)