For Commercial Applications
ES-WQ-PWR4022
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Series PWR4022
Series PWR4022
Commercial Reverse
Osmosis Systems
Flow Rate: Up to 15 gpm (56 lpm)
Watts Pure Water Series PWR4022 reverse osmosis (RO)
systems are commercial grade high-pressure RO units for
the reduction of total dissolved solids from water. They are
designed to supply reverse osmosis quality water with produc-
tion rates ranging from 10 to 15 gallons per minute (56 lpm).
These units are designed for floor mount installations. Reverse
osmosis is a process where high-pressure feed water is fed
into a semi-permeable membrane. In the membrane, pure
water is allowed to pass through the membrane material and
exit as purified permeate water. Dissolved mineral salts are not
allowed to pass through the membrane and become a con-
centrated reject stream that is sent to a drain. These RO sys-
tems use high pressure/high-rejection membranes to achieve a
minimum average NaCl ionic rejection of 97 percent.
Watts Pure Water Series PWR4022 RO systems are a well
designed, rugged line of purifiers. This series comes with a pre-
selected assortment of features, including our digital controller
for monitoring and operation. Corrosion resistant fiberglass
reinforced plastic (FRP) membrane housings, inlet and outlet
pre-filter pressure gauges, low-pressure switch with delayed
auto restart, inputs for tank level and pretreatment interlock,
conductivity meter, high conductivity alarm output, adjustable
reject recycle, permeate and reject water flow meters, reject
recycle flow meter, permeate water check valve, inlet solenoid
valve, membrane feed and reject water pressure gauges, auto
flush, and adjustable reject valve are all standard features.
These systems are designed to feed an atmospheric stor-
age tank for collection of the reverse osmosis water. Reverse
osmosis water has a wide variety of applications including
municipal water treatment, steam boiler and steam sterilizer
make up, laboratory use, spot free rinsing, ice and beverage
water, water for cooking, food processing, metal plating and
finishing, as well as water for humidification. Reverse osmosis
is also the pretreatment of choice for ion exchange type de-
ionization (DI) systems. Using RO water as make up to a DI
system reduces the exhaustion rate of the DI resin by up to 95
percent saving time, money, and chemicals associated with DI
resin regeneration.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Features
• Membrane Auto Flush
• Powder coated carbon steel support frame
• Corrosion resistant 300psi FRP high-pressure membrane
housings
• Pressure gauges for pre-filter inlet/outlet, membrane feed,
and reject water pressure
• Low feed water pressure safety switch
• Digital microprocessor based controller with delayed auto
restart after low pressure shut down
• Permeate water conductivity meter with high conductivity
alarm output
• Tank level and pretreatment interlock inputs
• High-pressure/high-rejection membranes with 97% minimum
average salt rejection
• Permeate, reject recycle, and reject water flow meters
• Adjustable reject and reject recycle valves
• Permeate check valve
• Automatic inlet solenoid valve
• 20" high flow pre-filter
Standards
Pre-filter Housing- NSF/ANSI Certified Std. 42
Membrane Housings- NSF/ANSI Certified Std. 61
PURE WATER
Note: Do not use with water that is microbiologically unsafe or
of unknown quality without adequate disinfection before or after
the system.
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