Breastfeeding Tips & Breast Pump Guide | Lactation Connection

If your breast pump is not suctioning the way it used to, the problem often lies in one of two breast pump parts.  Most breast pumps have a valve plus a diaphragm, filter or backflow protector.  The number one cause of low suction is a dirty, torn or worn out valve.  If you valve is the type that has a valve head and membrane shown here, it is imperative that you remove these parts when cleaning.  The valve membrane will retain a build up that decreases the suction.  Taking the membrane apart from the head is essential to remove this build-up.  If you see that the membrane will no longer close completely with the head or if it has a tear, replace it as soon as possible. If your breast pump has a duckbill valve (shown below) which in most cases is a clear or white valve, the tip of the duckbill must be able to close completely.  If it remains open, the amount of pressure your pump can provide is decreased.  As a rule, if you are pumping thre...