Spectra Silicone Valve (2pc)

These Spectra Silicone Valves, also known as duckbill valves, create suction between the breast pump and your nipple.. If a valve develops a hole or tear, the pump won’t work as effectively, and you’ll need to replace these valves. Fortunately, they’re really easy to replace! Each pack contains 2 valves, so you can replace both if you’re double pumping, or so you can keep one spare. Compatible with all Spectra Breast Pumps: S1, S2, Q.