MS Schippers Aqualevel Mode D'emploi page 10

2. Select the correct dimension for main and service pipes.
This means that main and service pipes must be capable of providing the calculated output (L/min) at the
measured working pressure and with the actual number of valves.
Select the necessary main-pipe diameter from the table below.
Main pipe
½"
¾"
1"
1 ¼"
1 ½"
2"
2 ½"
3"
Important! All piping and connections ahead of the main pipe must be of equal or greater diameter than the main pipe
from which the MS Aqua Level service pipes originate.
Recommendations
Other forms of consumption from the main pipe or service pipes must be taken into consideration. For example,
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supplying considerable quantities of water to a wet-feed tank may periodically cause the working pressure to drop
dramatically. In such cases, it may be necessary to provide separate water supplies.
Long troughs for gestating sows, approx. 20 sows per valve. Two valves per trough is optimal as this reduces the
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risk of feed blocking the distribution of water along the trough if one of the sows ceases feeding.
Installation of a pressure regulator to offset considerable periodic changes in water pressure.
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Installation of a central cleaning filter to remove grains of sand, lime scale and other foreign matter that may
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cause deposits to form within the valve.
If the valve housing is disassembled in order to clean the nozzle or diaphragm, it is recommended that the outer 15
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mm of the diaphragm be lubricated with a slipping agent before reassembling the valve. This ensures that the
valve can be subsequently reopened without difficulty.
We recommend SC-4 silicone grease.
Requirements
The optimum water pressure is 2.0 bar (working pressure). The minimum working pressure is 0.7 bar and the
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maximum working pressure 4.0 bar.
If the valve is supplied without piping, an airtight seal must be created during installation in order to prevent false
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air intake.
Operating problems and their solution
Unintended valve opening may be caused by:
Low water pressure
The general water pressure in the main pipe is sufficient, but too many valves are connected in series with small-
diameter hoses, thus dramatically reducing the actual water pressure at the valve.
Connecting individual valves direct to the main pipe is always preferable.
Low water pressure
The general water pressure is insufficient. A minimum pressure of 0.7 bar is required, even during water consumption.
Low rate of flow
If the piping is under-dimensioned, the quantity of water supplied per minute may be too low despite sufficient water
pressure. The water pressure will therefore drop dramatically as soon as water is consumed.
High water pressure
Sometimes, especially at night, water pressure may exceed the recommended maximum pressure. A pressure of 3 bar
measured during the day may rise to 7-8 bar at night. In such cases, it is necessary to install a pressure regulator.
Leaky valve housing
The vacuum formed in the valve housing is lost due to false air intake. Leaks may be caused by:
o
The two sections of valve housing being incorrectly connected.
o
The water inlet O-ring not forming an airtight seal.
o
The pipe thread not being correctly sealed.
Diaphragm coatings
If the diaphragm is coated with deposits of iron, ochre, lime scale or other foreign matter, it may not be able to close.
The problem can be solved by cleaning or replacing the diaphragm.
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Output at 2 bar
7 l/min
24 l/min
60 l/min
90 l/min
160 l/min
240 l/min
440 l/min
680 l/min