Solenoid
ValvesNC stands for normally closed NO stands for normally openNC is the coil is energized and out of airNO is the coil is energized into the airP is the intake R is the exhaust with a silencer A is the exhaust06 stands for DN6 1/8 inch08 stands for DN8 1/4 inch10 means DN10 3/8 inch15 means DN15 1/2 inchHow to install the intake pipe jointP: is the air inletR: is the exhaust port with a silencerA: OutletHow to connect the coil--There are a total of three terminals left and right side by side are the positive and negative poles a single protruding one is grounding (can be connected or not)The solenoid valve can work if the positive and negative poles are reversed but the indicator light above will not light up after the reverse connection.