The diaphragm inside the bottle opens from the pressure of the milk to collect it in the bottle, then closes with the next suction cycle of the pump. (newbabynewpaltz.com)
There are some features like complete control over suction cycle and power which I absolutely love and wish that top seller double electric breast pump — Medela Pump In Style Advanced Breast Pump also adopts soon. (electricbreastpumpwomen.com)
Hospital grade breast pumps are often the most powerful units you can buy, delivering strong suction cycles to maximize the stimulation of milk production in the breast. (wetheparents.org)