Inflater

noun

1. One who or that which inflates or distends; specifically, one who inflates prices. As applied to certain mechanical appliances, also spelled inflator.
2. One who, or that which, inflates.

   "the inflaters of the stock exchange"

3. A pump used to inflate tires.
4. Someone who inflates.
5. an air pump operated by hand to inflate something (as a tire)