How do I tell if my One-Way Valve is damaged?

Visually inspect the tip of the One-Way Valve for any physical crack or tear. The damage may be hard to see.

While the collection bottle is connected to the pump by the vacuum tubing, unscrew the bottle from the Collection Combo Kit and use your palm or another flat object to cover up the breast shield opening. Turn on the pump and watch the movement of the One-Way Valve. If the two edges of the valve tip do not scrunch up and pucker during pumping, the valve may be damaged.

Perform the “Bottle Test” as instructed in our Self-Diagnostic video to determine if you have a leaking valve.