Reliable and durable: the mini tank float valve is made of special technical plastics, corrosion resistant, more reliable than conventional metal products Pressure resistance: good sealing effect and higher pressure resistance. With lower water level of the float ball, the float filling valve can withstand higher liquid pressure (= 1 MPA) Installation: These float check valves can be installed at any angle with the adjustable arm. Tank holder with extended threads on the inlet side of the valve for mounting through the tank wall Design: The use of the float water level floating principle controls the inlet and outlet water switch to achieve a constant water level effect, keeps enough water and always clean water Wide ApplicationsThe back and forth shut-off valve is most used in reverse osmosis system, ponds, fish aquarium, etc.; also for watering chickens and other small animals and pets