Hydraulic Cylinder Actuators

Hydraulic Cylinder Actuators, also known as hydraulic cylinders, are mechanical devices that convert hydraulic power into linear displacement or motion. They are critical components of many machines where high forces are required. In a municipal water or wastewater treatment plant, these actuators are typically used for controlling various valves or gates. They can open or close the valves and gates, controlling the flow of water or wastewater through the various stages of treatment.

• To control the flow of water into and out of the treatment plant
• In the sludge treatment process, for controlling the movement of various gates
• For controlling the flow of effluent out of the plant

• Regular checks of the hydraulic fluid level and pressure
• Routine maintenance includes replacing seals and inspecting for leaks
• Safety considerations include avoiding overpressurization and ensuring the correct installation of the actuator to prevent accidents.

• Cylinder Barrel: Houses the piston and the hydraulic fluid under pressure. Selection or performance can be affected by the size and material of the barrel.
• Piston: Moves back and forth inside the barrel due to pressure changes. Its size and material can impact the actuator's performance.
• Cylinder Cap and Base: End closures of the cylinder. Their material and size determine their resistance to pressure.
• Seals: Prevent leakage of the hydraulic fluid. Material selection is critical to ensure a good seal and longevity.

• Stroke Length: The distance the piston can travel in the cylinder (in mm)
• Bore Diameter: The internal diameter of the cylinder (in mm)
• Operating Pressure: The pressure at which the actuator will operate (in psi)

• MasterFormat Division 44 - Pollution and Waste Control Equipment, Section 446113 - Actuators

• Parker Hannifin: Model Series 2H
• Bosch Rexroth: Model CD210
• Eaton: Model Series I, II, and III

• Pneumatic Cylinders: Similar to hydraulic cylinders but use compressed air instead of hydraulic fluid. They are used when lower force and speed are required.
• Electric Actuators: Use electric motors to produce linear motion. They are used when precise control is required, but they can't produce as much force as hydraulic cylinders.