This type of pump is designed to be used with large water bottles or jugs, such as 5-gallon bottles.
It operates using a hand-press or vacuum action to dispense water without the need for electricity or batteries.
It is often made of food-grade plastic and is considered a convenient and cost-effective way to access drinking water.
The pump typically comes with a removable tube that is inserted into the water bottle and can be adjusted to fit different bottle heights.