Amazon.com: Chief Double Acting Hydraulic Pump - Hand Operated Hydraulic Pump with Handle - 1.8 Gallon Reservoir Hand Pump - Hand Pump - 3625 PSI, Hydraulic Hand Pump 22 Lbs, 3/8" NPT Ports, 220992 : Industrial & Scientific
VEVOR Hydraulic Pump Double Acting Hydraulic Power Unit 12V DC Dump Trailer Pump 3200PSI Hydraulic Power Unit for Dump Trailer Car Lifting (12 Quart, Steel/Double Acting) | VEVOR US
Single Acting and Double Acting hydraulic cylinders: What's the difference? - YouTube
Hydraulic Hand Pump, Double Acting 5250psi / 350bar