Cylinders

• only has one airport
• when piston rod is pulled out a spring immediately pulls it back in to place.

• two air inlets
• does not have a spring
• piston movement is powered by air in both sides
• air coming in through port B will push the piston negative

• 3 ports
• 2 possible states
• The three ports are holes in the valve where air can flow in and out of the valve
• numbered so you can make the right connections
• button on valve is called the actuator.

Port 1- connection to compressed air supply
Port 2- connection to cylinder
Port 3- the exhaust