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CONCENTRATE RECIRCULATION VALVE: A needle valve that controls the amount of
concentrate from the desalinator array to be recirculated back into the feed stream. This feature
allows for higher recovery rates. Additionally, adjustment of this valve regulates the pump
discharge pressure.
FLOW CONTROL: A fixed orifice that controls the amount of water flowing across the membrane
to drain.
PRODUCT WATER CHECK VALVE: A one-way valve that prevents pressurized product water
from flowing back into the desalinator (and possibly damaging the membrane) when the system is
off. There is a check valve in the product line for each desalinator.
SYSTEM PRESSURE GAUGE: A glycerin filled gauge that displays the operating pressure in the
desalinator.
TANK PRESSURE GAUGE (Option): A gauge that displays product water pressure when using a
pressurized storage tank.
WATER SUPPLY PRESSURE GAUGE: A gauge that displays the water pressure of the feed
water source.
FILTER PRESSURE GAUGE: A gauge that displays the water pressure after the carbon cartridge
pre-filter. This is used to observe the pressure drop through the sediment pre-filter (a means of
detecting filter clogging or loading).
LOW PRESSURE SWITCH: An electrical switch that shuts off the unit in the event of low feed
water pressure. This is used as a pump protection device. This is factory set to cut off at 12 psi
(0.8 bar). This switch is the one mounted on the manifold and behind the sediment pre-filter.
TANK PRESSURE SWITCH: An electrical switch, used with a pressurized storage tank that
controls the system operation based on the storage tank pressure. This is factory set to shut the
system off when the tank pressure is 60 psi (4.1 bar) and turn the system on when the tank
pressure is below 40 psi (2.8 bar). This switch is the one mounted on the manifold and behind the
carbon post-filter.
PRE-FILTER CARBON CARTRIDGE ASSEMBLY: A 20” 10 micron filter that reduces chlorine in
the feed water.
POST-FILTER CARBON CARTRIDGE ASSEMBLY: A 20” 10 micron carbon cartridge filter that
helps remove bad taste and odor. This filter is used with pressure storage systems. A tank
pressure switch and check valve are always included with operation with a pressure tank storage
system.
POST-FILTER ASSEMBLY: A 10” housing. This filter is used with a Calcite element to neutralize
the pH of the product water.
TANK PRESSURE RELIEF VALVE: This valve limits the product pressure tank to 80 psi as a
precaution.