•Compatible with all Spectra pumps
•Not advisable to sterilize due to its rubber material
•Will affect suction of the breast pump with wear and tear (Please note that there is a slothole at the tip of each valve. It is part of the valve and NOT a defect.)
•Wash with liquid cleanser and rinse thoroughly
•Do not wash it with straw brush
•Do not detach from the breastshield by pulling from the end