2x Pumpables brand backflow protectors (plastic housing and membranes).

 

Compatible with Spectra, Pumpables brands and more. Used to prevent moisture getting into the pump. This backflow protector creates a complete physical barrier between your milk and the pump motor, ensuring that your milk is protected and that pump performance is maintained. Backflow protectors should be changed every 6 months, or when you notice damage to the silicone diaphragm on the inside of the backflow protector.

 

Other replacement parts available separately.