MettleAir 4HV310-15-1 PK Pneumatic Air Valve, 4 Way, 2 Position, Hand Operated Lever, 1/2" NPT Type: 4 Way 2 Position Hand Operated Lever Pneumatic Air Valve 1/2" NPT Model: 4HV310-15 Coil: N/A Ports: 1/2" NPT