Featuring a turquoise bistable solenoid valve, it connects to a battery water timer and allows you to create a complete, efficient underground system, even where there is no electrical mains: for example, a beach or mountain home. Equipped with a filter that traps impurities in the water and expels them the next time the system is used. suitable for high and low pressure shock-proof and weather resistant faston coupling manual opening control low speed shut off device to prevent pressure shock