The Viqua Solenoid Kit with Junction Box is an automatic shutoff valve the prevents untreated water from moving through your plumbing in the event of a power outage or failure of the UV system. The Solenoid Kit can be used with the D4, D4+ (choose the 3/4" version 650717-001) and the E4, E4+, F4, F4+ (choose the 1" version 650717-002).
