This hydraulic accumulator stores pressurized fluid in the hydraulic system to maintain system pressure when the pump is not running, dampen pressure surges, and provide a reserve of fluid for peak demand. It is installed in the pressure line between the pump and the control valves. A loss of pre-charge pressure in the accumulator causes slow implement response and frequent pump cycling. The accumulator is charged with nitrogen gas on the gas side; the diaphragm or piston separates the gas from the hydraulic fluid. On installation, verify the pre-charge pressure matches the system specification.