Spectra White Valve with Membrane

&nbspReplacement valve head to fit all Spectra electric breast pumps. This product&nbspis used with the Spectra Valve Membranes.&nbspCome with membrance for Blue Valve.This would be in replace of the duckbill valve.&nbspit functions the same as the duckbill valve just a different 2 piece design valve.You can use these interchangeably with the Spectra duck valves depending on which type of valve you prefer.&nbsp&nbspEach membrane will&nbsplast around 3-4 months (less if exclusively expressing) therefore it requires replacement over time.&nbspIf you notice your breast pump have less suction power or you are expressing less milk the membranes should be the first thing you need to check.&nbsp&nbsp[ Features ]Reusable&nbspValve Made of PP2 sets of Valve &amp MembraneCompatible with all Spectra breast pumps (S2 S1 S9 M1)