Solenoid Valves – Solenoid pilot valves are suited for general purpose horticultural, turf and gardening irrigation systems. They are built for either direct installation on irrigation valves (3/4″-4″ as part of a valve control loop for irrigation applications) or on a separate hydraulic base (1/8″ plastic or 1/8″, 1/4″ metal). The solenoid valve excels in its small overall outside dimensions, advanced operation and high reliability.