Prevent the loss of Vacuum issues and ensure a smooth-running sanitation system with the 1.5″ Duckbill Valve Kit. Our duckbill valves are one-way check valves that keep the waste and water running in the right direction and ensure the system holds a vacuum. These high-quality parts are made by Dometic and not an import knockoff. The Duckbill valves should be replaced every 1 to 4 years or sooner depending on the frequency of use.
Four valves are required for the S-Series pump (vacuum), while two valves are required for the T-series pump (discharge). Our duckbill valves also fit the following vacuum generators: VG12/24, VGIII, and Low Profile Vacuum Generators.