strong strength cover erosion resistance compared to metal valves, reducing maintenance costs while ensuring outdoor durability Solar Water valves with DC12V / AC22V solenoid ensures automatic flows control, ideal for solar water heater systems requiring stable pressure management for outdoor solar installations, this erosion resistant solenoid valves maintains stable water flows in residential and agricultural pressurized environments Engineered with copper component and weatherproof housing, this automatic water control valves withstands harsh conditions for years of maintenance without operate Ideal for homeowners and agricultural users seeking automated water regulation in pressurized irrigation systems or solar heating setups, Manufacturer: Shurhome