How often should you replace breast pump valves?
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Breast pump valves should be replaced on a regular basis. If you've noticed a loss in suction on your breast pump, or a decrease in milk output, the first thing you should check are the valves. How often should you replace breast pump valves? It depends on how often you pump; keep reading to learn more.
Why it's so important to replace breast pump valves
Your breast pump valves (and backflow protector membranes) are made of a flexible silicone material which stretches and releases each time your breast pump sucks in. This creates the suction you feel on your breast which draws breastmilk out. After a while of regular use, the elasticity of these parts wear down. Think of it like a rubber band: after a while, they lose their ability to stretch and snap back into place. The same thing is happening with your breast pump valve; the pump motor pulls at the valve and releases it on each cycle. When the valve wears down, it makes your breast pump less efficient because the motor has to work harder to achieve the same amount of suction with a slack, used valve than it does with a brand new, tight valve.How do I know when to replace breast pump valves?
Pay attention to things like a decrease in suction, or a decrease in pumped milk output. If you've noticed you're getting less milk than before or if you're feeling like your pump isn't as strong as it used to be, a good first thing to check are the valves (especially if it's been a couple months since they've been replaced). If there's a tear in your valve, it's time to replace it.How often should you replace breast pump valves?
How often you should replace breast pump valves depends on how frequently you pump and what settings you use. It's a bit of a range. We'll give a range for daily expressing (1 time per day) and frequent expressing (more than once a day). You should pay close attention to how your pump is performing within these ranges.

Duck valves (1-3 months)
Once daily expressing or less: You should expect to replace these once-piece valves every 2-3 months. Frequent expressing: You'll need to replace these about every 3-4 weeks.
