2/ 2 Direct Acting Normally Closed 4 mm Orifice 24V DC, Solenoid Valve., Q3, 3/ 2 Direct Acting Normally Closed 4, mm Orifice 24V DC Solenoid Valve., 3/ 2 Direct Acting, Normally Closed 4 mm Orifice 48V DC Solenoid Valve, 2/ 2 Direct Acting Normally Closed 6 mm Orifice 24V DC, 5/ 2 Internal Pilot Operated Single, Solenoid 4 mm Orifice 24V DC Solenoid Valve., 5/ 2, Internal Pilot Operated Single Solenoid 4 mm Orifice 48V DC, Solenoid NAMUR Type 4 mm Orifice 24V DC Solenoid Valve.