Staff Answer
Sep 28, 2026 - 07:32 AM
That closed end is a one-way "duckbill" valve. Water pushes it open to drain, and it stays closed to keep hot air and bugs out. If water is backing up, the end is stuck or clogged. Clean it or gently open it so water can pass.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
