Maymom Pump Parts Compatible with Spectra S2 S1 9 Plus Breastpump, 30mm Flange Valve Tubing Backflow Protector, Not Original Replacement Accessories

"Maymom aftermarket PUMP PARTS FOR SPECTRA S2 SPECTRA S1 SPECTRA 9 PLUS BREASTPUMPS. Made by Maymom. Not Original Spectra Parts. Incl 2 Flanges (30mm), 2 Valves, 2 Backflow Protectors and 2 Tubings. The flanges can only connect to WIDE MOUTH bottles. "AFTERMARKET PARTS MADE BY Maymom. INTERCHANGEABLE WITH SPECTRA PARTS. All parts are interchangeable with Spectra Pump Parts. Can be used with Spectra flange, Spectra backflow protector, Spectra valve, and Spectra tubing. "USED WITH WIDE-MOUTH BOTTLES ONLY. Use this kit with Spectra bottles, Avent bottles, and Maymom wide mouth bottles. DOES NOT work with OTHER WIDE NECK BOTTLES. CLOSED SYSTEM. No contact between milk and tubing. "DIFFERENT FLANGE SIZE AVAILABLE: 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm. Refer to size selection guide in product photo to choose the right size for you. N RETAIL PACK. All parts can be sterilized with water steam or boiling water. Do not contain any BPA. Tested by independent labs for safety.