Customer Questions and Answers for Check Ball by Whirlpool

This small check ball sits inside a check valve to allow one-way water flow. Replacing a worn or missing ball helps prevent backflow and supports reliable draining performance between cycles.

• Maintains one-way flow through the valve to stop water from returning after the pump stops
• Helps ensure complete, consistent draining
• A damaged, swollen, or missing ball can let water back up into the tub/sump
• Contribute to slow or intermittent draining and unusual gurgling/flow noises

• Disconnect power and shut off water before servicing
• Access the check valve assembly per your model's service information (commonly at the sump, pump outlet, or drain connection)
• Clean the valve seat/passage; remove debris that could prevent sealing
• Place the ball in the valve seat as shown in your model's parts diagram; reassemble and test for leaks and proper flow