What is a Foot Pump?
A foot pump is a device that uses foot action to move air or liquids. It has many uses, including inflating rafts, filling air mattresses, removing water from a small bilge, inflating bicycle tires, and pumping water to wash hands with. There are numerous types of foot pumps, but all operate on a similar up-and-down foot action. All foot pumps have the same basic design. First, an intake port connects to the pump housing. A valve on this port makes sure that the air or liquid flow is only in one direction. An airtight bladder or sealant is used so that what is taken in through the intake can not leave through any direction other than the exit (outtake) port. The outtake port also has a valve connection that only allows flow in one direction. When the housing is pressed down, air or liquid is pushed out of the pump housing through the outtake port; when the pump housing is depressed, air or liquid is drawn into the housing through the intake port. Springs or pistons are usually built in
