PlumbingSupply.com® logo
The Leading Online Plumbing Supplier Since 1995
Product Search:

Largest Inventory - Best Service - Lowest Prices
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Same day shipping on in-stock orders placed before 4:30pm Pacific Time M-F



Simple, straightforward and low shipping rates for these reverse osmosis system parts.


Reverse Osmosis Filters, Membranes, Tanks

for - H2O Works, KISS, Drinking Water Solutions, Vertex, American Plumber, Culligan, and PJD

PlumbingSupply.com® offers RO replacement filters and membranes for several manufacturer's Reverse Osmosis systems, including American Plumber, KISS, Drinking Water Solutions, Watts, and Aristocrat models. Choose one or replace them all, we have the reverse osmosis filters and membranes you're looking for. Let us be your source for RO replacement products and more.

Browse through our Great selection of reverse osmosis parts or click on any of the links directly below to jump to that section.
  • KISS Aristocrat/ 3000 & Ambassador Parts
  • Watts FMRO4 / KISS Aristocrat 5000-30 Parts
  • Watts FMRO4 / KISS Aristocrat 5000-50 Parts
  • KISS Aristocrat I Parts
  • KISS Duchess RO Parts
  • American Plumber RO Parts
  • Culligan RO Membranes
  • Cuno RO Membranes & Filters
  • PJD Membranes & Filters
  • Pure Water Machine Vertex Parts
  • Zoeller Pre & Post Filters
  • RO Unit Storage Tanks
  • Frequently Asked Questions
  •  
    to Reverse Osmosis Systems - to RO H2O Filtration Systems - to Reverse Osmosis Faucets



    H20 Works / KISS / Drinking Water Solutions Aristocrat 3000 Membrane/Filters
    Also fits Ambassador RO system

    Item # Item Description Price & Quantity
    ROP-PACKAGE3000 18GPD Membrane, Sediment Pre-Filter (2400001), Carbon Pre-Filter (2400024) Filter Wrench (5000001) $88.61
    ROP-FILTERPACK3000 Sediment Pre-Filter (2400001), Carbon Pre-Filter (2400024), Filter Wrench (5000001) $33.64
    KISS-1990152-1 18 GPD RO Membrane $92.45
    KISS-2400001 Pre-Filter (Sediment) $15.96
    KISS-2400024** Pre-Filter (GAC-CS Carbon) $24.73
    KISS-5000001 Filter Wrench $9.48
    **Please note: Upon installation all carbon filters require flushing prior to use. Flush carbon filters at the rated flow rate for at least 5 minutes prior to using the water from the filter.

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    H20 Works / KISS / Drinking Water Solutions
    Watts FMRO-4, Aristocrat 4000, Aristocrat 5000-30 Membrane/Filters

    Item # Item Description Price & Quantity
    ROP-PACKAGE5000-30 30GPD Membrane, Sediment Pre-Filter (2400001), Post-Filter (2400010 - 1/4" fipt inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $122.62
    30GPD Membrane, Sediment Pre-Filter (2400001), Post-Filter (2400010QC - 1/4" Quick Connect inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $127.58
    ROP-FILTERPACK5000 Sediment Pre-Filter (2400001), Post-Filter (2400010 - 1/4" fipt inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $54.00
    Sediment Pre-Filter (2400001), Post-Filter (2400010QC - 1/4" Quick Connect inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $58.95
    KISS-1990154-1 30GPD RO Membrane $96.84
    KISS-2400001 Pre-Filter (Sediment) $15.96
    KISS-2400024** Pre-Filter (GAC-CS Carbon) $24.73
    KISS-2400999** Pre-Filter (Carbon Block CTO) $25.83
    KISS-2400010 Post-Filter - GAC 1/4" Fipt - inlet/outlet $20.77
    KISS-2400010-QC Post-Filter - with Quick Connect fittings built-in - inlet/outlet $30.60
    KISS-5000001 Filter Wrench $9.48
    **Please note: Upon installation all carbon filters require flushing prior to use. Flush carbon filters at the rated flow rate for at least 5 minutes prior to using the water from the filter.

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    H20 Works / KISS / Drinking Water Solutions
    Watts FMRO-4 and Aristocrat 5000-50 Membrane/Filters

    Item # Item Description Price & Quantity
    ROP-PACKAGE5000-50 50GPD Membrane, Sediment Pre-Filter (2400001), Post-Filter (2400010 - 1/4" fipt inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $145.91
    50GPD Membrane, Sediment Pre-Filter (2400001), Post-Filter (2400010QC - 1/4" Quick Connect inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $150.86
    ROP-FILTERPACK5000 Sediment Pre-Filter (2400001), Post-Filter (2400010 - 1/4" fipt inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $54.00
    Sediment Pre-Filter (2400001), Post-Filter (2400010QC - 1/4" Quick Connect inlet/outlet), Carbon Pre-Filter (2400024), Carbon Pre-Filter (2400999**) Filter Wrench (5000001) $58.95
    KISS-1990150-1 50GPD RO Membrane $106.34
    KISS-2400001 Pre-Filter (Sediment) $15.96
    KISS-2400024** Pre-Filter (GAC-CS Carbon) $24.73
    KISS-2400999** Pre-Filter (Carbon Block CTO) $25.83
    KISS-2400010 Post-Filter - GAC 1/4" Fipt - inlet/outlet $20.77
    KISS-2400010-QC Post-Filter - with Quick Connect fittings built-in - inlet/outlet $30.60
    KISS-5000001 Filter Wrench $9.48
    **Please note: Upon installation all carbon filters require flushing prior to use. Flush carbon filters at the rated flow rate for at least 5 minutes prior to using the water from the filter.

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    H20 Works / KISS / Drinking Water Solutions Duchess Membrane/Filters

    Item # Item Description Price & Quantity
    ROP-PACKAGEDUCHESS 30GPD Membrane, Post-Filter (2400010), Sediment Pre-Filter (2400001), Carbon Pre-Filter (2400024), Filter Wrench (5000001) $111.81
    ROP-FILTERPACK-DUCHESS Sediment Pre-Filter (2400001), Post-Filter (2400010), Carbon Pre-Filter (2400024), Filter Wrench (5000001) $39.05
    KISS-1990154-1 30GPD RO Membrane $96.84
    KISS-2400001 Pre-Filter (Sediment) $15.96
    KISS-2400024** Pre-Filter (GAC-CS Carbon) $24.73
    KISS-2400010 Post-Filter - GAC 1/4" Fipt - inlet/outlet $20.77
    KISS-2400010-QC Post-Filter - with Quick Connect fittings built-in - inlet/outlet $30.60
    KISS-5000001 Filter Wrench $9.48
    **Please note: Upon installation all carbon block filters require flushing prior to use. Flush carbon filters at the rated flow rate for at least 5 minutes prior to using the water from the filter.

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    H20 Works / KISS / Drinking Water Solutions Aristocrat I Membrane/Filters

    Item # Item Description Price & Quantity
    ROP-PACKAGE-I 30GPD Membrane, Sediment Pre-Filter (2400001), Carbon Pre-Filter (2400024) Filter Wrench (5000001) $102.74
    ROP-FILTERPACK-I Sediment Pre-Filter (2400001), Carbon Pre-Filter (2400024),
    Filter Wrench (5000001)
    $33.63
    KISS-1990154-1 30GPD RO Membrane $96.84
    KISS-2400001 Pre-Filter (Sediment) $15.96
    KISS-2400024** Pre-Filter (GAC-CS Carbon) $24.73
    KISS-5000001 Filter Wrench $9.48
    **Please note: Upon installation all carbon block filters require flushing prior to use. Flush carbon filters at the rated flow rate for at least 5 minutes prior to using the water from the filter.

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".


    to other H20 Works / KISS / Drinking Water Solutions brand parts



    American Plumber Membranes, Filters, And Parts

    Item # Item Description Price & Quantity
    WROM-230TN Replacement Membrane (WRO-3500) $102.39
    WROM-230T Replacement Membrane (WRO-3000) $101.46
    WROR WRO-3000 & WRO-3500 Cartridge Set $44.30
    W5P 5 Micron Sediment Pre-Filter (Pair) $11.83
    WCC 20 Micron Activated Carbon Filter (Each) $14.40
    ROM-26T 26 GPD TFC Membrane $100.75

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    Culligan Compatible RO Membranes

    Item # Item Description Price & Quantity
    M2-CTA-16C 16 GPD For H5 & H3 Systems $39.69
    M3-TFM-18A 18 GPD For H8 & H83 Systems $39.57
    M5-TFM-36A 36 GPD Membrane For H8, H83, & AC Systems $39.29
    M6-TFM-50A 50 GPD Membrane For H8, H83, & AC Systems $39.67

    to many more Culligan compatible water filters

    - Or -
    View Button



    Cuno RO5500 Replacement Filters & Membranes

    Item # Item Description Price & Quantity
    AP-5527 (1) Pre & Post Filter Cartridge Set (Two Filters Total) $89.09
    AP-5500RM (2) TFC Membrane Module (Each) $139.60

    to many more Cuno water filters

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    PJD50 RO Unit Membranes & Filters

    Item # Item Description Price & Quantity
    ROP-50PJ4C Stage 1, 2, 3 and 5 Cartridge Filter Pack (4 Filters Total) $39.77
    ROP-50PJM Stage 4 TFM Membrane $89.78

    - Or -
    View Button



    PJD30 RO Unit Membranes & Filters

    Item # Item Description Price & Quantity
    ROP-30PJ2C Stage 1 & 2 Filter Pack (2 Filters Total) $24.88
    ROP-30PJM Stage 3 TFM Membrane $47.25

    - Or -
    View Button


    All brands of r.o. membranes have a shelf life (only buy what you need right now)
    we do not recommend purchasing r.o. membranes for future usage
    we do not take r.o. membranes back because they need to be "fresh".



    Pure Water Machine Vertex® RO Unit Membranes & Filters

    Item # Item Description Price & Quantity
    ROP-PW3C Stage 1, 2, & 4 Filter Pack (3 Filters Total) $29.88
    ROP-PW2M Stage 3 TFC Membrane $49.99

    - Or -
    View Button



    Filter Cartridges for Zoeller 343 RO System

    Item # Item Description Price & Quantity
    10-1371 Sediment Pre Filter $9.58
    10-1372 Carbon Post Filter $19.67

    - Or -
    View Button



    Storage Tanks For RO Systems

    Item # Item Description Price & Quantity
    ROP-TANK 3.2 Gallon RO Storage Tank $79.95
    ROP-TANKWITH 3.2 Gallon RO Storage Tank With Ball Valve $89.95

    - Or -
    View Button


    Sani-System RO Unit Sanitizer
    an image of the reverse osmosis unit sanitizer
    view larger image
    Great reasons to use RO sanitizer:
    • Sanitizes the reverse osmosis system in only 60 seconds time
    • Will not leave an after-taste or smell when used as directed
    • Chlorine-free and non-corrosive
    • EPA and NSF Certified for a 99.99% kill rate
    • Easy to use single-dose packets
    Get the job done fast with these conveniently easy-to-use, pre-measured sanitizing packets. When used as directed, Sani-System kills bacteria such as Staphylococcus aureus (Staph), Escherichia coli (E. coli) Listeria as well as many other micro-organisms that grow on the untreated surfaces of water quality equipment. This sanitizer eliminates odors while sanitizing tanks, lines and hoses. These sanitizers are a great way to help your system remain free and clear of bacteria growth, which in turn helps your mind stay free and clear of worrying about your water quality.
    Reverse Osmosis Sanitizer Packet - 0.25 FL. OZ. = $3.47
    Order 24 or more for Great Savings
    Order 96 or more for Even Greater Savings

    - Or -
    View Button

    Frequently Asked Questions

    Q. "From your experience, do you have any installation tips?"
    A. With any brand of RO system that has a carbon filter ahead of the membrane, we recommend that you disconnect the membrane and run the water through the carbon filter initially for at least five to ten minutes. Most carbon filters will dump some carbon at first and this can foul your membrane. Do this whenever you replace the carbon filter as well and you will save yourself some potential grief.

    Q. "While I am buying an RO system from you should I order an extra membrane and carbon filters?"
    A. Most people will not mention this (or do not know) but RO membranes have a shelf life. We highly recommend that you buy your RO membranes right before installing them and not to purchase extras until you need them. We take pride in offering not only today's replacement cartridges/membranes but we also offer replacements for RO units that we used to sell.

    Q. "I have a 'standard' RO unit and I need parts. Will yours fit?"
    A. There really isn't any such thing as a 'standard' Reverse Osmosis unit. If you purchased your RO from us, we currently have the filters and replacement cartridges for all of the types and brands that we have sold. Just let us know the model number and we will know what parts that you will need. If you did not purchase the reverse osmosis unit from us, we cannot furnish you with membranes or filters for your RO system (exceptions are H20 Works / KISS / Drinking Water Solutions brand and Culligan® brand).

    Q. "How often should I replace my filters and membrane?"
    A. This is a very common (and difficult to answer) question. It depends a lot on your water conditions, water quality and your usage. We believe that in no case (no matter what brand that you have) should you keep the filters longer than a year (changing them every six months is better) nor the actual RO membranes longer than two years (changing once per year is better of course).

    Q. "I originally purchased my RO elsewhere and now need filters and a membrane for it. I believe that your filters and membrane will fit. If I order them and they don't fit can I return them?
    A. Before you place an order, let us know that you did not purchase your RO from us and along with that, send us all the information that you have about your RO. Also, please read our return policy page.

    Q. "How do I know which post filter to choose? The KISS-2400010 or the KISS-2400010-QC?
    A. The KISS-2400010 post filter has 1/4" female iron pipe threads on the inlet and the outlet. You can take the fittings off of your old post filter and reuse them in the new filter. The KISS-2400010-QC post filter has Quick Connect fittings built-in to the filter housing. Simply push 1/4" O.D. plastic or copper tubing directly into the fitting for a quick and easy leak proof connection.

    Q. "I have an Aristrocrat 4000, but I heard that there might have been multiple configurations. How do I know which filters I need?"
    A. The Aristocrat 4000 reverse osmosis systems were sold in two different styles. Both styles used the 30GPD replacement RO Membrane #KISS-1990154-1.

    One style had two vertical housings, and two horizontal. One of the horizontal filters was the RO membrane itself and the other one was a post polishing filter. The first vertical cannister used the KISS-2400001 sediment pre-filter. The second vertical cannister used the KISS-2400024 carbon pre-filter. The horizontal post polishing filter was the KISS-2400010.

    The other style had three vertical housings and then only one horizontal filter which was the RO membrane. The first vertical cannister used the KISS-2400001 sediment pre-filter. The second vertical cannister used the KISS-2400024 carbon pre-filter. The third vertical cannister used the KISS-2400999 carbon pre-filter.



    return to top ↑

    We hope that we have helped you on this page with reverse osmosis parts,
    and thank you for helping to make PlumbingSupply.com® the most famous Internet plumbing supplier.


    Fun, inspirational quote of the day:
    "Tis always morning somewhere in the world."
    - Richard Henry Hengist Horne 1803-1884



    Is there something else that you are looking for?

    Enter search terms:

    OR - find plumbing supplies starting with: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z



    Easy payment methods