Double-rod cylinders are cylinders with a through piston rod and thus with two working areas of the same size for extending and retracting. Due to the through rod, these cylinders are about twice the size of cylinders with one-sided piston rods. 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.
Double-acting hydraulic cylinders provide a bit more flexibility when controlling piston extension and retraction. It is easy to move the piston back and forth and ensure the plunger can be fully retracted to its original position. Below are a few advantages of double acting cylinder: They use less energy while being faster and stronger. There is more movement control because the air moves two ways. They’re more likely to be ISO compliant than single acting hydraulic cylinders.
A single-acting hydraulic cylinder includes just one port. This is where the hydraulic fluid enters and forces the plunger out in one direction. A double-acting cylinder includes two ports. One for the hydraulic fluid to enter and extend the plunger, and the other for retracting the cylinder. Although very similar in design to single curtain rods, a double curtain rod allows you to layer more than one drapery panel or curtain for a more enhanced and dramatic look. Most typically, people layer a sheer curtain first and then a regular curtain on top to block out light.
