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High-Pressure Switch (#AHP1): Receives pressure signals from the pure water line. It turns on
when the pure water line pressure is below 20 psi and turns off when pure water line pressure reaches
45 psi.
Housing Wrench for Membrane and Stages 1, 2, and 3 Housings (#AWR2): Housing wrench
used to screw on and unscrew the membrane housing cap and the stage 1, 2, and 3 filter housings
Leak Stopper (#ALS1): Protects from any possible leaks by cutting off the water supply when the
sponge absorbs water
Low-Pressure Switch (#ALP1): Turns on when the source water pressure reaches 6 psi, turns off
when source water pressure drops below 6 psi
Membrane Housing and Cap (#NW12): Horizontal housing that the RO membrane is inserted into
Membrane Housing O-Ring (#ORM): 2 1/2" O.D. O-ring used to create the seal between the
membrane housing and the membrane cap
PPM: Parts Per Million, a unit used to measure TDS readings
psi: Pounds Per Square Inch, a unit used to measure water pressure
Quick Connect Fitting: A secure, easy-to-connect, and disconnect type of fitting used on the system.
The tubing is inserted past the tiny O-ring located inside each fitting, then locked into place by the
spider lock and blue clip
Reverse Osmosis (RO) Membrane (#MC150): 4
th
stage. High rejection, 0.0001 micron, thin-film
composite (TFC) reverse osmosis membrane, the heart of the reverse osmosis process
Sediment Filter (#FP15): 1
st
stage. 5-micron 10" polypropylene sediment filter. Traps particulate
matter such as dirt, rust, and silt
Stage 1, 2, and 3 housing O-Rings (#ORF): 3 5/8" O.D. O-ring used to create the seal between the
stage 1, 2, and 3 filter housings and their respective caps
Stage 1 See-Through Sediment Filter Housing (#HC12): Transparent stage 1 housing holds the
sediment filter. The see-through housing allows for the sediment filter to be visually inspected
Stage 2 GAC Filter Housing (#HW12): Solid white housing that holds the stage 2 GAC filter
Stage 3 CTO Filter Housing (#HW12): Solid white housing that holds the stage 3 CTO filter
TDS: Total Dissolved Solids, a measure of the contamination level of a water source
Transformer for Booster Pump (#ATRF150): Power supply used for the PMP150 booster pump
on residential iSpring RO systems
Optional Add-on
Ice Maker Connection Kit (Model# ICEK)
The iSpring ICEK can be purchased separately to feed RO water to your refrigerator for crystal-clear
ice cubes. It can
be easily installed to connect the RO system to your fridge's ice maker or water
dispenser.
TDS Test Meter (Model# TDS2 or TDS3)
The TDS test meter can be used to check your tap water quality regularly and help determine the time
for filter replacement.
Tubing (Model# T14B or T14W)
1/4'' food-grade tubing in a 50' roll is good for tubing replacement and extension as needed.
iSpring Tanks
This RO system can be used with a 4 – 200 gallons storage tank. A tank helps meet the impulsive
high-volume demand and build a commercial or whole-house Reverse Osmosis solution.
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