4V300 Series Solenoid Valve * 4V310-08/10-AC/DC * 4V320-08/10-AC/DC * 4V330C-08/10-AC/DC * 4V330P-08/10-AC/DC * 4V330E-08/10-AC/DC 08=> PT(Rc)1/4" Port Size 10=> PT(Rc)3/8" Port Size C=> Closed Center P=> Pressure Center E=> Exhaust Center DC=> 24V DC Voltage AC=> 220V AC Voltage