Heavy machinery and production equipment used in the petroleum and chemical production depends on high-pressure hydraulic valves to do the heavy lifting and movement, and even these can be used to keep industrial gear lubrication and other moving parts.  You can get hydraulic valves online via internet sources.

Stable hydraulic technology continues to advance, offering engineers a flexible and reliable way to perform tasks where high charge and precise movements or cargo and materials are required in situations of intensive ongoing, such as in ports, on top of the building buildings, and other locations where other methods would be near impossible.

                                                                                    Image Source: Google

The core of the hydraulic system began in the hydraulic motor, using a high-pressure reservoir and fluid amplifier for storing and distributing power while absorbing shock. Motion is achieved by using ram and piston, or arm lift, which is actually a different version of the high-pressure hydraulic valves, which took direct fluid pressure and sealed as needed through a hose to a specific ram or arm. 

Maintaining a constant pressure flow and direction is achieved by using a directional control valve to prevent backflow and pressure loss. To better protect the system from serious failure or damage, a pressure fuse or circuit is installed in the system that would be able to divert more pressure, helps reduce variability, and triggers alarms even in the event of serious problems in a series of pressures.