
We carry a wide range of parts to service and maintain your existing reverse osmosis system. If you can't find what your looking for, or are unsure of what you need, give us a call and one of our highly trained experts will help find what you are looking for.
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1/4" x 1/4" MPT John Guest Quick Connect Ell - Black
1/4" John Guest Quick Connect x 1/4" MPT Elbow Part Number: PP480822E This fitting is made of the following components: The body is produced in polypropylene (polypro) 'O'Rings are EPDM The collet is produced in polypropylene with stainless steel teeth Quantity Discounts Available -...- $3.38
$5.64- $3.38
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1/4" Quick Connect x 1/8" FPT John Guest Fitting
1/4" Quick Connect x 1/8" FPT John Guest Fitting Part Number: PP450821W This fitting is made of the following components: The body is produced in polypropylene (polypro) 'O'Rings are EPDM The collet is produced in polypropylene with stainless steel teeth Quantity Discounts Available -...- $6.58
$8.23- $6.58
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5/8" OD (1/2" CTS) " John Guest Stem x 1/4" Reducing Fitting
5/8" OD (1/2" CTS) " John Guest Stem x 1/4" Quick Connect Reducing Fitting ("CTS" Stands for Copper Tube Size)Part Number: PP062008W This fitting is made of the following components: The body is produced in polypropylene (polypro) 'O'Rings are EPDM The collet is produced...- $6.11
$7.64- $6.11
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PS-203 HM Digital Panel Mount Dual Display Dual TDS Controller
The PS-202 allows for continuous and simultaneous monitoring and control of TDS levels on two water lines. Features Simultaneously monitors and controls the TDS levels of two water lines (e.g., the feed water and product water) for high output commercial systems. Large, bright L.E.D....- $319.95
$312.44- $319.95
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Axeon 4 Stage Reverse Osmosis Filter Pack- RF-4000
Replacement Filter Pack for Axeon 4 Stage Reverse Osmosis Systems - RF-4000 Axeon formerly named RO Ultra Tech has been in the water treatment marketplace over 30 years. US Water Systems offers quality USA manufactured compatible filters at a cost savings that will meet...- $44.95
$81.81- $44.95
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PuROLine PL40T36PP Reverse Osmosis Filters
PuROLine PL40T36PP Reverse Osmosis Filter Pack The PuROLine is Manufactured by Good Water Warehouse out of Fullerton CA. Replacement Filter Pack for PuROLine PL40T36PP 4-Stage Reverse Osmosis System All Filters are Made in the USA NSF Certified for PuROLine High Purity Reverse Osmosis Systems...- $44.95
$81.81- $44.95
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G.A. Murdock Mur-lok 3/8” Stem x 1/4” Male NPTF - S0860816B
G.A. Murdock Mur-lok 3/8” Stem x 1/4” Male NPTF - S0660416B Part Number: S0660416B Features Leak Resistant Dual EPDM O-rings UV and Chemical Resistant Polypropylene Certified to NSF/ANSI Standard 58 304 Stainless Steel Gripping Teeth 150 p.s.i. @ 70ºF (10 Bar @ 20ºC) 60...- $3.99
- $3.99
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Gooseneck Lab Faucet - Right Handle
Features Removeable Serrated Barb Tip, attach accessory of your choice "Duraline" zero dead leg control valve offer easy open/close operation, 120 deg full flow to closed No elastomers, metals or lubricants used in construction All components designed for high traffic, hard use environments Ultra...- $238.00
$297.50- $238.00
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AXEON TE-1512-25 NSF-58 Residential Membrane 25 GPD
AXEON TE–Series Reverse Osmosis Membrane Elements are a reliable alternative for your residential reverse osmosis system needs.TE–Series Membrane Elements are NSF-58 Certified and are manufactured in a state-of-the-art, ISO-9001 compliant automated rolling facility, providing you with precise and advanced membrane quality that delivers on...- $49.95
$62.44- $49.95
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Pure-Tel RO-10 CTA-5 Reverse Osmosis Filter Pack
R&M Manufacturing - Pure-Tel Replacement Filter Pack for Pure-Tel RO-10 CTA-5 3-Stage Reverse Osmosis System All Filters are Made in the USA NSF Certified for Pure-Tel High Purity Reverse Osmosis Systems Includes (1) 5 Micron Pre-Filter (Pure-Tel R1111, FLTR-1010) (1) Carbon Block Pre-Filter (Pure-Tel...- $29.95
$54.51- $29.95
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LT-300-P Reverse Osmosis Filter Pack
Replacement Filter Pack For Flexeon LT-300-P Reverse Osmosis System With 20" Filters | Made In USA Filter pack includes the following filters: 2.5" x 20" 5 Micron Sediment Filter 2.5" x 20" Carbon Block Filter 2.5" x 20" Polyphosphate Filter- $144.95
$263.81- $144.95
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3-Stage Q Series Replacement Filters For Well Water
The PuROTwist 4000 REVERSE OSMOSIS semi-permeable membrane rinses contaminants to the drain. High quality filtered drinking water is produced and conveniently stored in a sealed tank. The PuROTwist 4000 lead-free faucet easily delivers an abundant supply of clear, clean, and fresh drinking water to...- $59.95
$90.91- $59.95
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US Water PurEdge3 Three-Stage Drinking Water Purification System Filter Pack
Our 3-Stage Filter Pack for the PurEdge3 Three-Stage Drinking Water Purification System includes silicone to lubricate the O-Rings and RO Sanitizing Solution, so that you can trust your water to be as clean as it can be.Includes (1) Interceptor PAC Filter (1) Chloramine Carbon...- $56.95
$71.19- $56.95
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AXEON TE-2012-150 NSF-58 Residential Membrane 150 GPD
AXEON TE–Series Reverse Osmosis Membrane Elements are a reliable alternative for your residential reverse osmosis system needs.TE–Series Membrane Elements are NSF-58 Certified and are manufactured in a state-of-the-art, ISO-9001 compliant automated rolling facility, providing you with precise and advanced membrane quality that delivers on performance and...- $72.95
$91.19- $72.95
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John Guest Quick Connect 1/2" Plug
John Guest Quick Connect 1/2" PlugPart Number: PP0816W This fitting is made of the following components: The body is produced in polypropylene (polypro) 'O'Rings are EPDM The collet is produced in polypropylene with stainless steel teeth Quantity Discounts Available - Call for Prices About...- $2.13
$2.66- $2.13
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3/8" x 1/4" MPT John Guest Quick Connect Ell - Black
3/8" John Guest Quick Connect x 1/4" MPT Elbow Part Number: PP481222E This fitting is made of the following components: The body is produced in polypropylene (polypro) 'O'Rings are EPDM The collet is produced in polypropylene with stainless steel teeth Quantity Discounts Available -...- $3.45
$5.75- $3.45
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3/8" x 1/4" x 3/8" Tube Quick Connect Reducing Tee - Black
G.A. Murdock Mur-lok 3/8'' x 3/8'' x 1/4'' Tube Union Tee - V0620426B Part Number: V0620426B Features Leak Resistant Dual EPDM O-rings UV and Chemical Resistant Polypropylene Certified to NSF/ANSI Standard 58 304 Stainless Steel Gripping Teeth 150 p.s.i. @ 70ºF (10 Bar @...- $4.79
$7.98- $4.79
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LC100 And LC100P Reverse Osmosis Filters
LC100 And LC100P Reverse Osmosis Filter Pack US Water Systems offers quality USA manufactured compatible filters. Replacement Filter Pack that fits Hague® WaterMax® LC100 And LC100P 4-Stage 20" Sump Reverse Osmosis Systems All Filters are Made in the USA NSF Certified Replacements Includes (1)...- $54.95
$100.01- $54.95
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HM Digital DM-1 TDS Monitor - 1/4" Inlet / 3/8" Outlet
The HM Digital DM-1 Digital TDS Monitor is The Perfect Way To Monitor the Quality of Your RO Water Features: Auto-Off function conserves battery power Dual Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm,...- $39.95
$49.94- $39.95
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HM Digital Commercial In-Line Dual EC Monitor with 1/4" Tee Fittings | DM-2EC
Inline conductivity meter that can be used on commercial water treatment systems such as car washes, window washing, manufacturing, and food processing. Features Highly efficient and accurate due to its advanced microprocessor technology. Displays EC levels of the Feed Water and Product Water with...- $59.95
$74.94- $59.95
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Installation
Installation of a reverse osmosis system can be performed by almost anyone. If you are a little technically inclined, you can most likely install a system yourself. The process may vary slightly depending on your setup and which system you ordered. For the most part, everything you need for installation is provided with the system. The tools you may need to supply yourself are as follows:
- Drill
- 1/4" Drill Bit
- Faucet Drill Bit (size will vary depending on faucet type)
- Philips Head Screwdriver
- Tubing Cutter or Razor Knife
- Channel Lock Pliers
- Adjustable Wrench
To get a preview of installation for an RO system, check out our DIY installation video here!
Maintenance
Sanitization
It recommended that you sanitize your RO system each time you change your filters (every 6 months depending on water quality). To sanitize your system, we recommend the use of Sani-System for RO Systems by Pro Products. The sanitation process itself takes 60 seconds of contact time. We provide a single use sanitizing packet with each of our reverse osmosis filter packs.

Repairing a Broken Fitting
Occasionally due to shipment or installation, RO fittings can break or leak. For this reason, we supply a spare elbow fitting with every RO unit. If your fitting breaks, you can use this extra fitting to repair your system in under 2 minutes.
Re-Pressurizing an RO Tank
Over time, the RO tank can lose pressure and you could begin to experience some problems. Tanks can be re-pressurized using a tire pressure gauge, and a bike pump or air compressor. The target pressure for our small residential RO systems is typically between 5-7 psi.
Replacement Filters
US Water Systems has more replacement filter packs than any other water treatment site. If you have an RO system, chances are we have replacement filters for your system. Buying a filter pack is fool-proof. Not only do you get all necessary filters for your system, but you also receive sanitation solution to make sure your first glass of water is as pure as it can be.
