Olmec pumps are used to supply pressurized oil, emulsion or water circuits, and hydraulic users operating in on-off mode.

These pumps operate with reciprocating motion, single-acting or double-acting, powered by a pneumatic control valve which stops when the maximum hydraulic pressure is reached, maintaining the pressure in the circuit without further air consumption. If the hydraulic pressure drops, the pump is automatically restarted to restore the preset hydraulic conditions...