A hydraulic power unit utilizes fluid to transmit power from one place to another and it is used to apply hydraulic pressure to power the hydraulic motors. Power packs are often used for heavy lifting applications or anything that requires strong, directional force. They are mainly used for industrial applications. Such hydraulic power packs create huge power and high flow rates. They can handle heavy loads for a long period.

The purpose of pressure-reducing values is to keep the secondary pressures correct in branches of hydraulic systems. Most pressure-reducing valves are open and 2 way this allows the pressure to flow freely until they reach further downstream where there is a set pressure.

Pressure relief valves are used in hydraulic systems to limit the system pressure to a specific set level. If this set level is reached, the pressure relief valve responds and feeds the excess flow from the system back to the tank. Note: the pressure relief valve is a normally closed pressure control valve

A double-acting hydraulic cylinder has a port at each end, supplied with hydraulic fluid for both the retraction and extension of the piston. A double-acting cylinder is used where an external force is not available to retract the piston or it can be used where high force is required in both directions of travel.

The working principle of single-acting cylinders are to transfer hydraulic fluids or an output force in one direction only. Within the cylinder, the piston rod can push outwards but cannot pull back, therefore requiring a force in the opposite direction to return the rod back to its original position.

A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flows into torque and angular displacement (rotation). The hydraulic motor is the rotary counterpart of the hydraulic system.

O-rings are used to seal all kinds of devices to keep them operating and safe. They do so by keeping necessary fluids in hydraulic systems and unwanted fluids and contaminants out.

A pressure switch is an instrument that automatically senses a change in pressure and opens or closes an electrical switching element, when a predetermined pressure point is reached. A pressure-sensing element is that part of a pressure switch that moves due to the change in pressure.

Designed to control double pumps of a Hi-Low system. It unloads a low-pressure pump when system pressure rises above-set pressures and only high-pressure pump delivers the flow. Nominal flow and pressure ratings model max (Check Models).