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AAVKIT-1
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Fernco AAV Air Admittance Valve Inline Kit Under Sink Vent for Bathroom and Kitchen Drain Gurgling and Odor, 1-1/2 in Tubular
Part # AAVKIT-1
- Improves drain performance. Helps stop gurgling and slow draining in poorly vented fixtures.
- No wall opening required. Adds venting support without running a new vent line.
- Rated for everyday use. Up to 8 dfu (branch) for typical residential under-sink venting needs (where permitted).
- Fits common 1-1/2" tubular. Connects 1-1/2" tubular to 1-1/2" tubular.
Dimensions
| End 1 pipe OD range | 1.50" to 1.50" |
| End 2 pipe OD range | 1.50" to 1.50" |
| End 1 inside diameter | 1.50" |
| Length | 3.25 in |
| Width | 2.15 in |
| Height | 5.66 in |
| Weight | 0.8 lb |
Product details
The Fernco AAVKIT-1 inline aav kit is a fast, diy-friendly solution for improving under-sink drain performance without opening walls or running a new vent line. Its inline design automatically positions the air admittance valve 4" above the horizontal branch drain, ensuring proper installation height and reducing complexity. The aav opens to admit air when needed to help maintain the trap seal and reduce gurgling and slow draining, then closes to help block sewer gas odors. Designed for common residential under-sink applications including bathroom lavatories, kitchen sinks, bar or prep sinks, and utility or laundry sinks. The kit connects 1-1/2" tubular to 1-1/2" tubular, installs vertically within 15° of plumb, and must remain accessible for inspection or replacement. Temperature rated -4°f to 140°f. Refer to the dimensional drawing for detailed dimensions. Always confirm local plumbing codes and installation requirements before installation.
Vent in minutes. Inline design automatically positions the aav 4" above the horizontal branch drain to support proper, code-accepted placement. Always confirm local code.
Helps block sewer gas odor. Reduces trap siphonage by helping relieve negative pressure.
Pro trusted, diy-friendly. Install in minutes. Measure. Cut. Connect.
Specifications
| Connection | Mechanical |
| Fitting type | Valve |
| Flexible | No |
| Material | Plastic, Elastomeric PVC, Stainless Steel |
| Color | Black |
| Standards | ASSE 1051 |
| Application | Above Ground, DWV |
| Max test pressure | 4.3 psi |
| Temperature range | -4°F to 140°F |
Drawings and downloads
Documents
Dimensional drawing
AAVKIT-1, PDF · 566.44 KB
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