Axial piston variable displacement pump
pressure compensating variable displacement axial piston pump
swash-plate axial variable displacement piston pump
constant-pressure and variable displacement
horizontal three-piston high pressure plunge pump
High pressure piston pump
guide piston complement for fuel pump
Electro-hydraulic proportional radial piston pump
duplex steam piston pump
double-acting piston pump
differential piston pump
Confined Piston Internal Combustion Pump
closed-cycle hydraulic piston pump
centre-packed type piston pump