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Post Carbon Filter (#FT15): 5th stage. Works as a final polishing filter before the water is delivered to the
faucet
PPM: Parts Per Million, a unit used to measure TDS readings
Pressurized Holding Tank (#T32M): 3.2g capacity pressurized water holding tank. The air bladder forces
the water to the drinking faucet when the faucet is opened. Tank comes pre-pressurized and should read 7-10
PSI when empty
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 (#MC7): 4th stage. High rejection, 0.0001 micron, thin-film composite
(TFC) reverse osmosis membrane, the heart of the reverse osmosis process
Sediment Filter (#FP15): 1st 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 ⅝” 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 that 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
T Fitting on Stage 5 Post Carbon Filter (#7544K): T fitting located on the right side of the stage 5 Post
Carbon Filter
Tank Valve (#ABV2K): On/off valve that screws onto the top of the tank
TDS: Total Dissolved Solids, a measure of the contamination level of a water source
TDS Meter (#TDS3): Handheld meter used to measure water quality
Transformer for Booster Pump (#ATRF5): Power supply used for the PMP5 booster pump on residential
iSpring RO systems
Tubing (#T14B / #T14W): ¼” food grade tubing used on the system
UV Replacement Bulb* (#UVB11): Replacement bulb for the UV filter
Ultraviolet Sterilization Filter* (#UVF11A/UVF11B): 6th or 7th stage. Mainly used for well water. Kills
any viruses or bacteria that make it through the initial stages of the system
UV Transformer/Ballast* (#UVF11A/UVF11B): Power supply for the UV filter. Indicator lights on the
ballast will only light up when water is flowing. UVF11A is for 110V power sources, UVF11B is for 220V
power sources
www.123filter.com | (678) 261-7611 | support@123filter.com Page 24
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