Product Water (Permeate) Storage
For operation in applications that use large amounts of water, a storage tank is required to store water and then deliver it at
a desired pressure. The permeate water is not pressurized from the system. Two options for storage tanks are available:
Bladder Tank
This tank type is closed and pressurized using an internal air charge to create the delivery pressure for the stored water. This
configuration will affect the rated daily production of the system due to the back pressure on the membrane.
Atmospheric Tank
An atmospheric tank is closed and includes an air vent so that the water can be added or removed from the tank without creating
pressure. The advantage of this tank type is that venting eliminates any backpressure on the unit, thus increasing the system's
operating production and efficiency. When using an atmospheric tank, an external repressurization pump is used to remove water
from the tank and pressurize it to 50 psi throughout your site. The W-Series systems can fill a non-pressurized tank equipped with a
level control assembly kit that will close when the tank is full.
Note: When using an atmospheric storage tank, it is strongly recommended to use a safety overflow drain pipe to an appropriate size
floor drain.
VII. Installation
Tools and Installation Materials
Plumbing runs on the process, purge and drain outlets should all be completed with PVC or PEX piping. Copper and
galvanized pipe will be chemically attacked by the low TDS permeate water.
• Teflon® tape
• Fitting sealant
• 3/8" tubing
• Plastic tube cutter
• Flat head screwdriver (medium)
• Phillips head screwdriver (medium and small)
• Multimeter
• Wire strippers/cutters
Water and Drain Connections
Remote By-pass Box Connections (if equipped)
Connect to NON-SOFTENED CITY WATER.
W-Series Owner's Manual
• PVC pipe cutters
• PVC piping and PP tubing
• PVC cement
• PVC pipe hangers
• PVC isolation / by-pass valves
• Additional 316 SS pressure gauges
• PVC or steel conduit
• U-Strut or suitable weight bearing hardware for
installation
To POINT OF USE
Connect to POSTFILTER.
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