A double acting cylinder will have a hose or tube to both ends of the cylinder barrel. Depending on the action you want (lift, lower, dump, curl) pressurized oil is directed to one end or the other by the valve and at the same time the valve provides a clear path for the oil from the opposite end to return to the reservoir. Float position in the valve opens both ends of the cylinder to the reservoir. It is common, but not required, for double acting loader cylinders to have a valve with a float position.
A single acting cylinder will normally have a hose or tube to only one end of the cylinder barrel. The valve supplies oil to the end of the cylinder with a hose to move it, the other end may have an atmospheric vent or not, depending on how it is built. Gravity or weight moves the arms/bucket/etc. in the other direction when single acting cylinders are used. HTH
Are the hoses that go out to your cylinders connected directly (either threaded in or attached to threaded adaptor fittings) into the valve?
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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