The use of float valves in hydroponics nutrient reservoirs ensures a constant level of nutrient can be maintained, and the hydroponic system is less likely to run dry.
A float valve is usually installed into the main nutrient reservoir, and connected to a 'header' tank with backup nutrient (or just plain water). As the main nutrient reservoir level drops, fresh supplies are feed (usually by gravity) into the main reservoir.
The float valves below can even be connected to mains water. To use this with mains pressure (tap water), use amains pressure reducerwhich connects to your tap.
Apex Valves Compact Float Valve 3/4"
Float Valve with space saving float.
Ideal for regulating fluid levels in tanks.
Can be connected to all water pumps and mains water pressure, with a 3/4" nut & tail connection.
Dimensions: Valve length is approximately 300mm. Float - 135mm (L) x 50mm x 40mm 13mm BSP Nut & Tail Joiner included