Maymom Pump Parts Compatible with Spectra S2 Spectra S1, incl 17mm Flange Valve Tube Bottle Backflow Protector

*Kit Contents: 2 Flanges (17mm), 2 Duckbill Valves, 2 Backflow Protectors, 2 Tubes, 2 Bottles (with One-Piece Travel Cap). Work with Spectra S2, Spectra S1, Spectra 9 Plus Breastpump. Nipples and Dome Caps are NOT included in this kit

*All pump parts made by Maymom. Not Original Spectra S2 Accessories. Not Original Spectra S1 Accessories. Not Original Spectra Pump Parts

*Compatible and interchangeable with Spectra pump parts. Same suction power as OEM parts. Replace Spectra Flanges, Spectra Duckbill Valves, Spectra Backflow Protectors, Spectra Tubings, Spectra Bottles (Wide Mouth). Multiple flange sizes available: 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm

*The One-piece cap of Maymom bottle includes sealing ring for secure seal. NO waste of milkdrop. Design for travel and storage of formula or breast milk. It's also perfect to convert baby feeding bottle to snack container or tumbler for mommy

*Material does NOT contain any BPA. Can be sanitized with water steam, boiling water or microwave-steam bags. Comply with FDA regulations for plastic materials that contact food

Frequently Asked Questions
Q: How to avoid breaking the backflow protector during setup with the flange?

A: Turn to insert the backflow protector into and off from the flange with care. DO NOT push in or rock straight in and out with force. It will break.

Q: Does the bottle include a nipple?

A: No, the bottle includes one-piece cap WITHOUT nipple.

Q: Where can I find the size marking on the flange?

A: It is marked at the end of the nipple tunnel.

Q: How do I choose the flange sizes?

A: Since your nipples will enlarge after pumping, measure the diameter of your nipples AFTER a pumping session. Do NOT include the areola. Refer to size selection guide in the product photos at the top of this page.

Q: How do I clean them?

A: Disassemble all parts. Clean them with soapy water, and rinse with tap water. Sterilize all parts with water steam for 15 minutes or in boiling water for 5 minutes. When using boiling water, make sure to cover all parts with water to avoid melting them.

Q: Are they dishwasher safe?

A: You may dishwash flanges, bottles and backflow protectors on top rack with LOW heat drying. However, we DO NOT suggest dishwashing the duckbill valves. Please handwash the valves with care.