This product contains:
- 2 x Spectra valve heads
- 2 x Silicone membranes
These assemble together as a valve for your breast pump and are compatible with all Spectra breast pumps. You can use these interchangeably with the Spectra duck valves, depending on which type of valve you prefer.
Each membrane will last around 2 months (less if exclusively expressing), and are an item that requires replacement over time to maintain efficient suction of your breast pump. If you notice that your breast pump seems to have less suction or you are expressing less milk, the membranes should be the first thing you check.