W Series are compact, light and portable used to power single acting-cylinders. They operate horizontally or vertically, with pump head downwards. All models with pressure relief valve. Single stage pumps are used for cylinders with low oil capacity. The two speed pumps are recommended for applications where the cylinder plunger must move rapidly, also for larger cylinder hook-ups where greater oil capacity is required. All pumps have 3/8-18 NPT female ports. X series Automatic two-speed pumps with a 4-way control valve for operation of double acting- cylinders. Internal pressure relief valves for overload protection. Two-speed operation for high tonnage cylinders where oil capacity and fast economical cycle time is needed.