This original version with the spring is now discontinued. Please shop here for the new improved version of Back Flow Protector which is compatible with your allegro pump.
Unimom breast pump spare parts.
This piece is a spare Back Flow Protector, suitable for use with the Allegro single electric breast pump.
It includes a white silicone round membrane, a bottom and a lid that clips on, and the spring inside.
If you're confused about spare parts for your pump - just contact us and we can help you out.
(Pump Valve is sold separately and we recommend replacing those too)
