1. This is a 1PCS G1 or 2'' Brass solenoid valve with normally closed (N or C) function, available in 12v, 24v, and 220v options. It is suitable for use in solar water heaters as a water and air inlet flow switch. 2. The valve is made of brass, ensuring durability and reliability. It has a G1 or 2'' size, making it compatible with a wide range of plumbing systems. 3. With its N or C design, it remains closed until an electrical signal is received, preventing unwanted flow. The multiple voltage options allow for flexibility in different applications. 4. It can be used as an inlet valve in solar water heater systems, controlling the flow of water and air accurately. This helps maintain the proper functioning of the system. 5. The specific 'DIRECTION 112VINLET VALVE' indicates its particular orientation and voltage rating for this specific application, ensuring correct installation and operation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store