Oatey® Sure-Vent® 20 DFU capacity air admittance valve's one-way valve allows air to enter the plumbing drainage system when negative pressures develop in the piping system.
| Type | : | Vent |
| Connection Type | : | Snap-On |
| Material | : | ABS |
| Connection Size | : | 1-1/2 to 2 in |
| Nominal Size | : | 1-1/2 or 2 in |
| Temperature Rating | : | 150 deg F |