When you can hear air leaking (escaping) from the duckbill valve, it may be wearing out.
- Is it tacky?
- When you press the ends together does it open easily?
- Is it seated firmly in the adapter?
They’re pretty inexpensive to replace, so it might be worth trying a new one to see if it helps.
Reviewed by Diana West, IBCLC
June 10, 2021