Ocean Pacific Technologies (OPT) is developing a line of axial piston pump and energy recovery products specifically designed for the desalination industry. The axial piston pump (APP) design has been used in the oil hydraulics industry for over 70 years with tens of thousands of units in operation, in thousands of different applications. In the early 1980âs a line of axial piston products that used plain water as the hydraulic fluid instead of oil was developed, marketed and applied to various industries. OPT has developed a combination high-pressure pump and energy recovery device specifically for reverse osmosis desalination systems. The pump, called the Ocean Exchanger (or OceanX), combines the proven principles of water hydraulic axial piston pump and energy recovery pressure exchanger technology together in a single unit that doesnât require additional pumps or controls. In fact, the unit regulates product flows and recovery of the system precisely, eliminating the need for additional instruments and controls typically required in reverse osmosis application