The FQF 1/2' Automatic Water Level Control Valve, model FQF09, is designed for tank towers that require automatic refill control without a float sensor. It uses a liquid switch to detect water level and provides a refill shut off when the target level is reached. The valve is compact and intended for use with standard 1/2 inch connections. Key benefits Prevents overflow and water waste by automatically stopping refill at the set level. No float sensor required, reducing potential leak points and simplifying maintenance. Easy installation with a 1/2 inch connection size compatible with common piping. Reliable operation in tank tower applications with a simple, robust design. Helps reduce water and energy costs by maintaining appropriate water height without continuous operation. Key attributes Functionality: automatic water level control valve with refill shut off using a liquid switch; no float sensor. Compatibility: designed for tank towers; suitable for 1/2 inch connection systems. Size: 1/2 inch connection. Material: not specified by manufacturer in available product information. Performance: provides automatic refill shutoff to maintain the desired water level in tank towers. Applications and use cases Residential or commercial building water storage towers where space is limited or float sensors are impractical. Roof or elevated water storage towers in apartment complexes, offices, or campuses. Irrigation or agricultural storage tanks that require simple, reliable refill control without a float sensor.