Pumping unit - Valves
If the pumping unit is connected directly to the water supply, a filter unit is required to prevent impurities in the system.
For water flow rates up to a maximum of 25l/min the filter unit with ½” thread is sufficient.
For higher water flow rates, the filter unit with ¾” thread is required.
The pressure gauge is installed after the water sensor.
This sensor is essential for the protection of the pump.
In the event of a lack of water, this sensor automatically stops the pump.
While the pump is running, the pressure on this pressure gauge (pump inlet pressure) must be between 1 and 4 bar.
Functionality and dimensions of filters
Filter units with bypass can be used for the addition and dosing of additives (drugs and disinfection substances).
Any 3/4″ mechanical dosing unit can be installed at the bypass. Usually filter units with 4 filters are used, but where the water quality is good, it is possible to use filter units with only 2 filters.
The minimum filtration degree required is 1 micron. The filter size is indicated on the filter inserts (25 micron, 10 micron, 5 micron chemical, 1 micron).
The water flows through the unit in a specific direction: from the largest mesh filter to the narrowest mesh filter.
This ensures optimal filtration of the feed water, a long service life for the filter cartridges and the spray nozzles.
- Water inlet
- Mixing chamber
- Water outlet
Functionality of the dosing unit
The dosing unit operates without electricity and is an integral part of the main water supply; it is activated by water pressure.
The dosing unit draws the concentrated mixture (medicines, vitamins, etc.) from the mixer, calculates the correct dosing percentage and mixes it with the incoming water in the mixing chamber.
The mixture is then injected into the fogging system.
The dosage is always constant and proportional to the amount of water, even if there are fluctuations in the pressure and flow rate of the water flow.