Breast Pump power of suction is usually documented as mmHG which is millimeters of mercury, the standard unit of measuring vacuum pressure. When you're buying a breast pump, you might see mmHg in the product listing. This number, generally in the range of 220 to 350, is the maximum suction level.

What level should my breast pump be on?

It is important to always use the pump at the suction level which feels right to you, not just pressing the + button until you get to the highest setting! The Maximum Comfort Vacuum is the highest vacuum a mother can use and still be comfortable.

Does stronger suction mean more milk?

A: First, let's expel a very common myth — having a more powerful pump does not necessarily mean you're going to pump more milk. ... That's because too much suction can cause your breast tissue to be squeezed together too much, cutting off milk flow from your milk ducts. And it can hurt your nipples, too.