Solenoid valves, open when de-energised, pilot-operated
Solenoid valves, closed when de-energised, pilot-operated
Solenoid valves, closed when de-energised, combined operation
Solenoid valves, open when de-energised, combined operation
Solenoid valves, closed when de-energised, directly operated
Solenoid valves, open when de-energised, directly operated