The fundamental function of a float valve for tanks, is to regulate the water level inside them, reducing the volume of entry as the level rises, and closing the entrance completely when the maximum desired level is reached. On the contrary, it allows new entries when that level drops as a result of consumption.
Installation:
Normally it is located in the upper part of the deposit. The best fastening requires the placement of a wall bushing, the same diameter as the valve, inserted in the wall of the tank.
- It is advisable, before assembling the valve, to make sure that the pipe is clean of stones and sands, etc. Likewise, it is necessary to install a retainer filter of these stones and sands, for the correct functioning of the valve, and a shut-off valve if the inclination of the conduction may make it necessary to isolate the assembly.
- The following diagram shows how to properly install the valve, the oscillating arm and the float, which are delivered disassembled. A dedicated Float Valve Distributor can offer the best deal now.
When the water inlet pressure is higher than 1 bar (10 mCA), it is advisable to install a tube that acts as a shock absorber for the jet, reducing sudden movements of the surface.
Determining the appropriate DN:
At input pressures of up to 1 bar, the following table must be taken into account, with an indication of liters per second, to determine the diameter of the valve to be installed. At higher pressures, the lower immediate diameter can be adapted.
Technical characteristics:
- Body in gray cast iron.
- Control arm in galvanized iron. ·
- PVC buoy (inflation pressure 0,15 bar at 20ºC).
- Epoxy paint min. 200 microns.
Jobe Valves 