- For Spectra S1, S2, M1, 9 plus pumps, install the flange, adapter, valve and membrane as shown in the diagram.
- For other Spectra Pumps, (e.g. Spectra Dew 350) , there is no back flow protector. you will not need the adapter. just plug the tubing connector to maymom flange.
Tubing Adapter for Spectra