Mini float valve: compact and space saving, ideal for small water tanks and aquariums, providing reliable automatic water level control without taking up much space. Adjustable water level: middle nut mechanism allows precise control of the water height, enabling accurate up performance. Supports flexible installation from either or side angles to suit different setups. Flexible installation: can be rotated 90 degrees for tight or awkward placements; suitable as a humidifier float valve in appropriate configurations. Replacement option: replaces worn or broken ball components by installing a plastic float valve, restoring proper function without needing a full valve replacement. Material and size: plastic float valve with mini sizing, designed for small scale applications and easy handling. Performance and compatibility: provides stable operation, simple adjustment, and dependable use in small water tanks, aquariums, and humidifier reservoirs. Use scenarios: In a small aquarium, the valve maintains the desired water level by compensating for evaporation, helping keep fish and plants stable. In a compact humidifier reservoir, it maintains a consistent water depth to support steady mist output. As a quick upgrade or replacement for worn or broken float valves in small water systems, restoring reliable regulation with a plastic, easytoinstall unit.