Parker Hannifin B6X2000XXA B6 Series 4 Way Air Control Valve, 2 Position NC-Air Return/Spring Assist, Single Remote Pilot Valve, Remote Pilot: M5 or Valve Less 15mm Solenoid, 3/8" NPT Inline Port: Amazon.com:
HOBART Parker Water Solenoid Valve 271006-1: Amazon.com: Industrial & Scientific
Parker 520411000 Manual Air Control Valve, 4-Way, 1/4in NPT: Industrial Valves: Amazon.com: Industrial & Scientific