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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Fittings

Fittings

Jaco ® Fittings and John Guest For Reverse Osmosis & Pure Water Filtration Systems

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  1. Inline Check Valve - Back Flow Prevention - John Guest Speedfit Quick Connection 1/4SCV and 3/8SCV
    Inline Check Valve - Back Flow Prevention
    Inline Check Valve - Back Flow Prevention - Check Valve- 1/4" quick connect - one way flow, Easy to install. 1/4SCV and 3/8SCV or John Guest Elbow Fitting for Membrane Housing. Learn More
    $27.99 Special Price $19.99 As low as $17.99
  2. 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
  3. Jaco ® Nipple Connector Fitting - Male Threads MNPT
    Jaco ® Nipple Connector Fitting - Male Threads MNPT
    Jaco ® Nipple Connector Fitting MNPT - Male threaded Nipple Connects Two Female Threads. Commonly used to connect two filter housings together, or, to connect two female threaded FNPT parts. Learn More
    $6.99 Special Price $3.99 As low as $2.99
  4. Jaco ® Run T Connector For Poly Tubing
    Jaco ® Run T Connector For Poly Tubing
    Jaco ® Run T Connector For Poly Tubing - For use in reverse osmosis systems. 1/4" tube - 1/4" MNPT Learn More
    $9.99 Special Price $5.99 As low as $3.99
  5. JACO- TEE CONNECTOR- For poly tubing to hookup refrigerator icemakers and second tanks - 1000
    Jaco ® Tee Connector For Poly Tubing To Hookup Refrigerator Icemakers And Second Tanks.
    Jaco ® Tee Connector For Poly Tubing To Hookup Refrigerators, Icemakers, UV Systems, Chillers, Hot Pots, Coffee Machines, Ice Machines, Second Tanks, Etc Learn More
    $9.99 Special Price $5.99 As low as $3.99
  6. 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
  7. Jaco ® Union Fitting For Poly Tubing
    Jaco ® Union Fitting For Poly Tubing
    Jaco ® Union Fitting For Poly Tubing. Connects two pieces of tube. Learn More
    $8.99 Special Price $4.99 As low as $2.99
  8. John Guest Angle Stop Water Valve
    John Guest ® Angle Stop Water Valve
    John Guest ® Angle Stop Water Valve - Makes installation a snap. Very simple to use. PPASV121208W and PPASV121212W Learn More
    $19.99 Special Price $12.99 As low as $10.99
  9. John Guest water faucet adaptor with quick connector for poly tube
    John Guest ® water faucet adaptor with quick connector for poly tube
    John Guest ® faucet adapter with quick connector for poly tube - Easy quick connect push in installation. 7/16-24 UNS thread to attach to faucet. Cut the end of the tube square ensuring it is free of score marks and burrs. Slip all of the way into and it locks shut. Easy to remove and reuse. 7/16-24 UNS thread to attach to faucet. Choose your tube size. CI3208U7S and CI3212U7S Learn More
    $8.99 Special Price $4.99 As low as $3.49
  10. John Guest inline water shut off valve
    John Guest ® inline shut off valve
    John Guest ® inline shut off valve - Easy to install push in quick connectors. PPSV040808W and PPSV041212W Learn More
    $17.99 Special Price $9.99 As low as $7.99
  11. John Guest Reducer - 1/4" tube to 3/8" stem (pair) PI061208S
    John Guest ® Reducer - 1/4" tube to 3/8" stem (pair) PI061208S
    John Guest ® Reducer - 1/4" tube to 3/8" stem. Easily connects 1/4" tubing to 3/8" female quick connect push in fittings. (price per pair) PI061208S Learn More
    $11.99 Special Price $6.99 As low as $4.99
  12. John Guest ® Tube Cutter - TSNIP
    John Guest ® Tube Cutter - TSNIP
    John Guest ® tube cutter TSNIP - Great for making a perfect cut everytime. Helps prevent leaks by making a square end cut ensuring proper fit and seal in water connecttion fittings. A real must for any professional or discerning home owner. Learn More
    $17.99 Special Price $12.99 As low as $10.99
  13. John Guest Tube Cutter Replacement Blades - 5 Pack
    John Guest ® Tube Cutter Replacement Blades - 5 Pack
    John Guest ® Tube Cutter Replacement Blades - Easy replacement. Package of 5 Replament Blades. Learn More
    $15.99 Special Price $11.99 As low as $9.76
  14. John Guest Locking Clips For Speedfit Quick Connectors For Water Tubes
    John Guest ® Locking Clips For Speedfit Quick Connectors For Water Tubes
    John Guest ® Locking clips secure the collet in position on John Guest Quick Connector to prevent an accidental disconnection of the tube. PIC1808R, PIC1812R and PIC1816R. PIC1808R = 1/4 " PIC1812R = 3/8 " PIC1816R = 1/2". Price is for a packet of 10. Learn More
    $7.99 Special Price $4.99 As low as $3.99
  15. 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
  16. 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
  17. John Guest Speedfit Plug Quick Connector. PI0808S, PI0812S, PI0816S
    John Guest Speedfit Plug Quick Connector. PI0808S, PI0812S, PI0816S
    John Guest Speedfit Plug Quick Connector. Use to plug a John Guest Quick Connector filting. PI0808S, PI0812S, PI0816S Learn More
    $4.99 Special Price $2.79 As low as $1.99
  18. John Guest ® Straight Union Connector
    John Guest ® Straight Union Connector
    John Guest ® Straight Union Connector - Connects tube to tube using SpeedFit Quick Connectors. PI201208S , PI0408S , PI0412S Learn More
    $9.99 Special Price $6.99 As low as $5.79
  19. John Guest Speedfit Water Tank Valve For Reverse Osmosis Systems
    John Guest ® Speedfit Tank Valve For Reverse Osmosis Systems
    John Guest ® Tank Valve For Reverse Osmosis Systems - These valves are manufactured in white polypropylene with food grade EPDM 'O' Rings for use with potable water. This fitting is made of the following components: The body is produced in polypropylene. PPSV500822W and PPSV501222W. Learn More
    $17.99 Special Price $11.99 As low as $9.99
  20. John Guest ® Tee Connector For water Systems - Quick Connectors
    John Guest ® Tee Connector For Water Systems - Quick Connectors
    John Guest ® Tee Connector - Quick Connectors - All equal size connections or one port different for adaption. The body is produced in acetal copolymer. 'O'Rings are nitrile rubber. The collet is produced in acetal copolymer with stainless steel teeth. PI0208S , PI0212S , PI301208S , PI301612S. Learn More
    $14.99 Special Price $9.99 As low as $7.99
  21. John Guest Speedfit Plug In Stem Elbow Quick Connector PI220808S, PI221208S, PI221212S, PI221616S
    John Guest Speedfit Plug In Stem Elbow Quick Connector PI220808S, PI221208S, PI221212S, PI221616S
    John Guest Speedfit Plug In Stem Elbow Quick Connector For Water Filtration Systems. Easy to install and uninstall. Simply insert and this plug in eblow will create a 90 degree elbow corner turn. PI220808S, PI221208S, PI221212S, PI221616S. Learn More
    $6.99 Special Price $3.99 As low as $3.39
  22. Tank Ball Valve with Jaco Compression Fittings - 3/8'' Size- 1000
    Replacement Water Tank Valve With Jaco Fittings
    Replacement Water Tank Valve With Jaco Fittings. Fits all standard tanks. Very easy to use. Learn More
    $13.99 Special Price $9.99 As low as $6.39
  23. JG Replacement O-ring
    John Guest Replacement O-Ring 1/4" - 5-Pack
    John Guest CP-R08I-S 1/4" Replacement O-ring - 5 PER PACK Learn More
    $7.79 Special Price $4.99 As low as $3.99
  24. JG Replacement O-ring
    John Guest Replacement O-rings 1/2" 5 -PACK
    John Guest CP-R081-S 1/2" Replacement O-ring- 5 PER PACK Learn More
    $8.99 Special Price $5.99
  25. JG Replacement O-ring
    John Guest Replacement O-Ring 3/8" - 5-Pack
    John Guest CP-R121-S 3/8" Replacement O-ring - 5 PER PACK Learn More
    $8.79 Special Price $5.49
  26. JOHN GUEST- Angle-Stop-Valve - 3-8 - ASV121212W / ASVPP2LF - 1000
    John-Guest-Angle-Stop-Valve-3-8 ASV121212W / ASVPP2LF
    John Guest ASV121212W / ASVPP2LF Angle Stop Adapter Valve 3/8" Male Comp X 3/8" Male Comp X 3/8" Tube Learn More
    $13.99
  27. Aquatec-Merlin Adaptor 1/2'' to 3/4'' John Guest Disconnect with Buna-N-O-Ring-QJS-554-1000
    Aquatec 1/2" John Guest to 3/4" Quick Disconnect With Buna N O-ring For Merlin Reverse Osmosis System Pumps
    Aquatec 1/2" John Guest to 3/4" Quick Disconnect With Buna N O-ring For Merlin Pumps. Learn More
    $12.99 Special Price $9.99
  28. JOHN GUEST- SCV-PI480822S - 1000
    Check_Valve-Elbow-1/4 (John Guest SCV-PI480822S Check Valve. 1/4" Tube X 1/4" MNP...
    John Guest SCV-PI480822S Check Valve. 1/4" Tube X 1/4" MNPT Fixed Elbow. Learn More
    $15.99 Special Price $12.99
  29. JOHN GUEST- SCV-CI40821W- 1000
    John Guest SCV-CI480821W Check Valve 1/4" Tube X 1/8" MNPT
    John Guest SCV-CI480821W Check Valve. 1/4" Tube X 1/8" MNPT Fixed Elbow. Learn More
    $12.99 Special Price $10.99
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Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.