Solenoid operated valves use an electrical coil to regulate the placement of a poppet, plunger or spool to open or near a valve. Standard solenoid Handle voltages are 12VDC, 24 VAC/DC, 120VAC or 240VAC.Put in the muffler: Attach the pneumatic muffler into the exhaust port in the valve to reduce sound and control the exhaust stream.For advanced air