Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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SlimLine Water Filter Housings

Slimline Water Filter Housings

POU (point of use) Drinking Water Filter Housings And Systems

Connectors are optional and are shown near the bottom of the page. See more John Guest ® or Jaco ® fittings and parts.

  1. PENTEK- #151121- Slim-Line Water Filter Housing Replacement - 1000
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring. Learn More
    $5.69 Special Price $4.99 As low as $3.00
  2. Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench
    Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-1 # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-1 Water Filter Housing Wrench. Fits 4" Slim Line Housings. (Slim Line Housings Have A 3 1/2" diameter "O" Ring) Ametek # 150294 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. Fits most standard style RO systems. Replaces 150294. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Order New O-rings And Be Sure To Lube Them With Dow 111 Silicone Sealant To Prevent Leaks Learn More
    $9.99 Special Price $6.99 As low as $4.99
  3. TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. Simple to use for Reverse Osmosis membrane monitoring. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers to monitor their RO membrane. Learn More
    $49.99 Special Price $37.99 As low as $17.99
  4. Bracket For 2 Slimline Water Filter Housings
    Bracket For 2 Slimline Water Filter Housings
    Bracket For 2 Slimline Water Filter Housings. Holes punched to fit most brands of filter heads and accessories. 9 1/4 x 5 7/8 inches. Learn More
  5. Bracket For 3 Slimline Water Filter Housings
    Bracket For 3 Slimline Water Filter Housings
    Mounting Bracket For 3 Slimline Water Filter Housings. Holes punched to fit most brands of filter heads and accessories. 14 x 5 7/8 inches. Learn More
    $19.99 Special Price $12.99 As low as $10.99
  6. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

    Learn More
    $5.99 Special Price $3.99 As low as $1.79
  7. Jaco ® Elbow Connector Fitting - 90 degree - Sold As a Pair
    Jaco ® Elbow Connector Fitting - 90 degree - Sold As a Pair
    Jaco ® Elbow Connector Fitting - 90 Degree - Sold as a Pair. Tube x MNPT Thread Sizes. Learn More
    $8.99 Special Price $4.99 As low as $3.99
  8. Jaco ® Straight Tube Connector Pair
    Jaco ® Straight Tube Connector Pair
    Jaco ® Straight Tube Connector - Sold as a pair. Easy to install and use. Learn More
    $8.99 Special Price $4.99 As low as $2.99
  9. Slimline 10 Inch - Water Filter Housing -1000
    Water Filter Housing - Slimline 10 Inch
    Water Filter Housing - 10" Slimline replacement filter housing. Choose 1/4" or 3/8" Female FNPT threaded ports. No pressure relief valve. Great as a stand alone water filter or as a replacement for broken sumps on RO systems. Cheaper than some sumps alone and assures that you can complete the repair of a broken sump on a RO system. There are many different thread patterns on the sump / cap assemblies. A mismatch may cause a leak. This housing uses a very common thread pattern. If the sump does not work as a replacement then also replace the housing cap. This will assure a perfect fit. See 9 3/4" Sediment Prefilters See 9 7/8" Sediment Prefilters See 9 3/4" Carbon Filters Learn More
    $34.99 Special Price $17.99 As low as $13.99
  10. John Guest Super Speedfit Quick Connector - Male - Straight
    John Guest ® Super Speedfit Quick Connector - Male - Straight
    John Guest ® Super Speedfit Quick Connectors - Male - Straight - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI010821S , PI010822S , PI010823S, PI011222S , PI011223S Learn More
    $8.99 Special Price $4.99 As low as $3.99
  11. John Guest Super Speedfit Quick Connector - Male - Elbow
    John Guest ® Super Speedfit Quick Connector - Male - Elbow
    ohn Guest ® Super Speedfit Quick Connector - Male - Elbow - John Guest Super Speedfit Quick Connectors - Male - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI480821S , PI480822S , PI480823S , PI481222S , PI481223S Learn More
    $8.99 Special Price $4.99 As low as $3.99
  12. Pentek ® 158002 SlimLine 5 Inch Water Filter Housing
    Pentek ® 158002 SlimLine 5 Inch Water Filter Housing
    Pentek ® 158002 SlimLine 5" Water Filter Housing. 3/8" Female NPT Threads. For 5" replacement water filter cartridges. Built in pressure relief valve provides easier filter changing. Learn More
    $28.99 Special Price $19.99 As low as $16.99
  13. Pentek ® 158129 SlimLine 20 Inch Water Filter Housing
    Pentek ® 158129 SlimLine 20 Inch Water Filter Housing
    Pentek ® 158129 SlimLine 20" Water Filter Housing. 3/8" Female NPT threaded ports. No pressure relief valve. Uses SW-1 wrench and 151121 o-ring. Learn More
    $47.99 Special Price $34.99 As low as $29.99
  14. Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit
    Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit
    Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit. For all 5", 10" & 20" Pentek SlimLine Water Filter Housings. Bracket and screws. Learn More
    $9.99 Special Price $6.99 As low as $4.29
  15. Pentek / Ametek / US Filter BFS-201 Water Filter System Pentek ® 160196
    Pentek / Ametek / US Filter BFS-201 Water Filter System Pentek ® 160196
    Pentek / Ametek / US Filter BFS-201 #160196 Water Filter System With Two 10" Slim Line Housings. Comes Mounted On Hanging Bracket. Integral pressure relief button for easy filter changes. 3/8" FNPT Ports. Filters Optional And Additional. 14" X 10" X 4 1/2" Learn More
    $99.99 Special Price $69.99 As low as $49.99
  16. US Filter Pentek 158005 Slimline 10 Inch Blue Water Filter Housing
    US Filter Pentek 158005 Slimline 10 Inch Blue Filter Housing
    US Filter Pentek 158005 Blue Slimline 10" Filter Housing - Includes pressure relief button for easy filter changes. For 10", 9 7/8" & 9 3/4" replacement filter cartridges. - 3/8" Female NPT Threaded Ports. Typical housing for use in replacing a damaged RO filter housing or for a single stage filter for POU (point of use). Learn More
    $29.99 Special Price $19.99 As low as $13.99
  17. US Filter Pentek 158007 Slimline 10 Inch Clear Water Filter Housing
    US Filter Pentek 158007 Slimline 10 Inch Clear Filter Housing
    US Filter Pentek 158007 Slimline 10" Clear Filter Housing - Slimline Filter Housing - 3/8" Female NPT Threaded Ports. Includes pressure relief button for easy filter changes. For 10", 9 7/8" & 9 3/4" replacement filter cartridges. - Typical housing for use in replacing a damaged RO filter housing or for a single stage filter for POU (point of use). Learn More
    $39.99 Special Price $29.99 As low as $23.99
  18. Pentek 151039 Pressure Relief Valve Button Kit
    Pentek 151039 Pressure Relief Valve Button Kit
    Pentek 151039 Pressure Relief Valve is a Replacement Pressure Relief Button Kit that works with whole house housings with pressure release buttons. Learn More
    $8.99 Special Price $4.99
  19. Slimline 10 Inch - Water Filter Housing -1000
    Pentek Water Filter Housing - Slimline 10 Inch
    Pentek Water Filter Housing - 10" Slimline replacement filter housing. 1/4" Female FNPT threaded ports. No pressure relief valve. Great as a stand alone water filter or as a replacement for broken sumps on RO systems. Cheaper than some sumps alone and assures that you can complete the repair of a broken sump on a RO system. There are many different thread patterns on the sump / cap assemblies. A mismatch may cause a leak. This housing uses a very common thread pattern. If the sump does not work as a replacement then also replace the housing cap. This will assure a perfect fit. See 9 3/4" Sediment Prefilters See 9 7/8" Sediment Prefilters See 9 3/4" Carbon Filters Learn More
    $34.99 Special Price $17.99 As low as $13.99