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Tiffin Motorhomes Knowledge Base

My Sani Flush system is not taking water, what should I do?

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The Sani Flush system includes a vacuum breaker in line before water enters the black tank. If your shore water pressure is below 40 PSI, the water may not have enough force to pass through the system’s check valve and enter the motorhome. 

  • We recommend confirming that your water source is providing at least 40 PSI.
  • If you do have sufficient pressure and the issue persists, the next step would be to inspect the vacuum breaker.
  • If you need assistance locating this part, feel free to give us a call — we’re happy to guide you through the process.If the vacuum breaker needs to be replaced, the good news is that it’s a simple task. The fitting is hand-tightened, making it quick and easy to swap out.