Solar Tracker - A mounting rack for a PV array that automatically tilts to follow the daily path of the sun through the sky. A PV array-direct solar pump should reach this voltage in full sun conditions. In a higher voltage array, it will be a multiple of this voltage. Pump - A surface pump used to increase pressure in a water line, or to pull from a storage tank and pressurize a water system. See Surface Pump.
Water is pushed out by centrifugal force.
See also multi-stage. Check Valve - A valve that allows water to flow one way but not the other. Diaphragm Pump - A type of pump in which water is drawn in and forced out of one or more chambers, by a flexible diaphragm. Check valves let water into and out of each chamber. Foot Valve - A check valve placed in the water source below a surface pump.