The system filters the hydraulic fluid and compresses it so much that the force created will be able to move, turn or lift mechanical equipment often with heavy payloads. A basic hydraulic system comprises of: oil reservoir, hydraulic pump, valves, hydraulic oil, motors, hose or tubing, filter and cylinder(s). To ensure that your system works correctly it is important to have hydraulic parts tested on a regular basis to prevent any catastrophic equipment failures that may cause injury to operators or workers in the vicinity. Any damaged or worn hydraulic parts, especially the hydraulic circuit components could be substituted with quality replacement spares. Here at MalpasDirect we have an extensive selection of hydraulic pumps, cylinder seals, valves and couplings to choose from, so it's easy to find what you need.