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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.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

Fittings

Fittings

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

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  1. 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.
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    $6.99 Special Price $3.99 As low as $2.99
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  2. 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
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    $9.99 Special Price $5.99 As low as $3.99
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  3. 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
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    $8.99 Special Price $4.99 As low as $3.49
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  4. 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
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    $17.99 Special Price $9.99 As low as $7.99
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  5. 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
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    $11.99 Special Price $6.99 As low as $4.99
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  6. 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.
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    $7.99 Special Price $4.99 As low as $3.99
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  7. 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
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    $8.99 Special Price $4.99 As low as $3.99
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  8. 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
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    $4.99 Special Price $2.79 As low as $1.99
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  9. 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
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    $9.99 Special Price $6.99 As low as $5.79
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  10. 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.
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    $17.99 Special Price $11.99 As low as $9.99
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  11. 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.
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    $6.99 Special Price $3.99 As low as $3.39
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  12. 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.
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    $13.99 Special Price $9.99 As low as $6.39
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  13. Jaco Tube Inserts-Sold as a 10 Pack
    Jaco Tube Inserts-Sold as a 10 Pack
    Fitting Tube Insert
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    $5.99 Special Price $4.99 As low as $3.99
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  14. 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
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    $13.99
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  15. 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.
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    $12.99 Special Price $9.99
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  16. JOHN GUEST- SCV-PI480822S - 1000
    John Guest Check Valve SCV-PI480822S 1/4" Tube X 1/4" MNPT
    John Guest SCV-PI480822S Check Valve. 1/4" Tube X 1/4" MNPT Fixed Elbow.
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    $15.99 Special Price $12.99
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  17. 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.
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    $12.99 Special Price $10.99
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  18. Easy Adaptor for water feed line tap - 1/2'' FPT x 1/2'' MPT with 1/4'' Quick Connect- 1000
    Easy Adapter for water feed line tap. 1/2" FNPT X 1/2" MNPT with 1/4" quick connector
    Easy Adaptor for water feed line tap. 1/2" FPT X 1/2" MPT with 1/4" Quick Connect.
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    $15.99 Special Price $12.99
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  19. JOHN GUEST- PIC1808R Locking Clips 1/4'' - 1000
    John Guest PIC1808R Locking Clips for Quick Connectors 1/4"

    John Guest PIC1808R Locking Clips for Quick Connectors 1/4" for RO reverse osmosis systems and under counter water filter systems..

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    $4.99
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  20. JOHN GUEST- PIC1816R Locking Clips 1/2'' - 1000
    John Guest PIC1816R Locking Clips 1/2" for Quick Connectors

    John Guest PIC1816R Locking Clips 1/2" for Quick Connectors on RO Reverse Osmosis & Under Counter Water Filter Systems.

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    $6.99
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  21. JOHN GUEST - PI010821S - Male Connector 1/4'' Tube X 1/8"" MNPT- 1000
    John Guest PI010821S Male Connector 1/4" Tube X 1/8" MNPT For Drinking Water Systems

    John Guest PI010821S Male Connector 1/4" Tube X 1/8" MNPT For Drinking Water Systems - SOLD IN PAIRS

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    $4.99
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  22. JOHN GUEST- PI011624S- 1000
    John Guest PI011624S Male Connector 1/2" Tube X 1/2" MNPT
    John Guest PI011624S Male Connector 1/2" Tube X 1/2" MNPT - SOLD IN PAIRS
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    $4.99
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  23. JOHN GUEST- PI01082S- 1000
    John Guest PI010822S Male Connector 1/4" Tube X 1/4" MNPT for Drinking Water Systems

    John Guest PI010822S Male Connector 1/4" Tube X 1/4" MNPT for Drinking Water Systems - SOLD IN PAIRS

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    $4.99
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  24. JOHN GUEST-PI010823S - 1000
    John Guest PI010823S Male Connector 1/4" Tube X 3/8 MNPT
    John Guest PI010823S Male Connector 1/4" Tube X 3/8" MNPT - SOLD IN PAIRS
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    $4.99
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  25. JOHN GUEST- PI011222S- 1000
    John Guest PI011222S Male Connector 3/8" Tube X 1/4" MNPT
    John Guest PI011222S Male Connector 3/8" Tube X 1/4" MNPT - SOLD IN PAIRS
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    $4.99
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  26. JOHN GUEST0- PI011223S- 1000
    John Guest PI011223S Male Connector 3/8" Tube X 3/8" MNPT Quick Connectors for Drinking Water Systems.

    John Guest PI011223S Male Connector 3/8" Tube X 3/8" MNPT Quick Connectors for Drinking Water Systems - SOLD IN PAIRS

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    $4.99
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  27. JOHN GUEST- PI480821S- 1000
    John Guest PI480821S Fixed Elbow 1/4" Tube X 1/8" MNPT Quick Connectors for Drinking Water Systems.

    John Guest PI480821S Fixed Elbow 1/4" Tube X 1/8" MNPT Quick Connectors for Drinking Water Systems - SOLD IN PAIRS

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    $4.99
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  28. JOHN GUEST- PI480822S - 1000
    John Guest PI480822S Fixed Elbow 1/4" Tube X 1/4" MNPT Connector

    John Guest PI480822S Fixed Elbow 1/4" Tube X 1/4" MNPT Connector for drinking water systems. - SOLD IN PAIRS

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    $4.99
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  29. JOHN GUEST- PI480823S- 1000
    John Guest PI480823S Fixed Elbow 1/4" Tube X 3/8" MNPT for drinking water systems

    John Guest PI480823S Fixed Elbow 1/4" Tube X 3/8" MNPT for drinking water systems - SOLD IN PAIRS

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    $4.99
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  30. JOHN GUEST- PI481222S - 1000
    John Guest PI481222S Fixed Elbow 3/8" Tube X 1/4 MNPT
    John Guest PI481222S Fixed Elbow 3/8" Tube X 1/4" MNPT - SOLD IN PAIRS
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    $4.99
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  31. JOHN GUEST- PI481223S - 1000
    John Guest PI481223S Fixed Elbow 3/8" Tube X 3/8" MNPT With Quick Connectors for Drinking Water Systems

    John Guest PI481223S Fixed Elbow 3/8" Tube X 3/8" MNPT With Quick Connectors for Drinking Water Systems - SOLD IN PAIRS

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    $4.99
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  32. JOHN GUEST- PI0808S Plug 1/4'' Tube- 1000
    John Guest PI0808S Plug 1/4" Tube for Quick Connectors on Drinking Water Systems

    John Guest PI0808S Plug 1/4" Tube for Quick Connectors on Drinking Water Systems

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    $2.79
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  33. JOHN GUEST-PI0816S Plug 1/2'' - 1000
    John Guest PI0816S Plug 1/2" Tube for Quick Connectors on Drinking Water Systems

    John Guest PI0816S Plug 1/2" Tube for Quick Connectors on Drinking Water Systems

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    $3.79
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  34. JOHN GUEST- PI0812S Plug 3/8'' Tube - 1000
    John Guest PI0812S Plug 3/8" Tube
    John Guest PI0812S Plug 3/8" Tube
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    $3.29
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  35. JOHN GUEST-PI0412S- 1000
    John Guest PI0412S Straight Union Connector 3/8" Tube X 3/8" Tube
    John Guest PI0412S Union Connector 3/8" Tube X 3/8" Tube
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    $7.99
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  36. JOHN GUEST- PI201208S- Reducing Union Connector- 1000
    John Guest PI201208S Reducing Union Connector 3/8" Tube X 1/4" Tube for Drinking Water Systems

    John Guest PI201208S Reducing Union Connector 3/8" Tube X 1/4" Tube for Drinking Water Systems

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    $8.99
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  37. JOHN GUEST- PPSV500822W- Tank Shut-Off Valve 1/4'' - 1000
    John Guest PPSV500822W Tank Shut-Off Valve 1/4" Tube X 1/4" FNPT 90 For Drinking Water Systems

    John Guest PPSV500822W Tank Shut-Off Valve 1/4" Tube X 1/4" FNPT 90 For Reverse Osmosis Tanks

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    $11.99
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  38. JOHN GUEST- PPSV501222W- Tank Shut-Off Valve- 3/8'' - 1000
    John Guest PPSV501222W Tank Shut-Off Valve 3/8" Tube
    John Guest PPSV501222W Tank Shut-Off Valve 3/8" Tube X 1/4" FNPT 90
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    $12.99
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  39. JOHN GUEST- PI0208S Union Tee 1/4'' Tube X 1/4'' Tube X 1/4'' Tube - 1000
    John Guest PI0208S Union Tee 1/4" Tube X 1/4" Tube X 1/4" Tube for Drinking Water Systems

    John Guest PI0208S Union Tee 1/4" Tube X 1/4" Tube X 1/4" Tube for Drinking Water Systems

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    $9.99
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  40. JOHN GUEST- PI301612S Reducing Tee 1/2'' Tube X 3.8'' Tube - 1000
    John Guest PI301612S Reducing Tee 1/2" Tube X 3/8" Tube X 1/2" Tube
    John Guest PI301612S Reducing Tee 1/2" Tube X 3/8" Tube X 1/2" Tube
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    $12.99
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  41. JOHN GUEST- PI0212S Union Tee 3/8'' Tube X 3/8''' Tube - 1000
    John Guest PI0212S Union Tee 3/8" Tube X 3/8" Tube X 3/8" Tube for Drinking Water Systems

    John Guest PI0212S Union Tee 3/8" Tube X 3/8" Tube X 3/8" Tube for Drinking Water Systems

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    $10.99
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  42. JOHN-GUEST-Tee-3-8 X 1-4 - PI301208S Reducing Tee- 1000
    John Guest PI301208S Reducing Tee 3/8" Tube X 1/4" Tube X 1/4" Tube
    John Guest PI301208S Reducing Tee 3/8" Tube X 1/4" Tube X 3/8" Tube
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    $11.49
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  43. JOHN GUEST- PI051223S- Stem Adapter 3/8'' & 3/8'' NPTF Threads- 1000
    John Guest PI051223S Stem Adapter 3/8" Stem X 3/8" MNPT for drinking water systems

    John Guest PI051223S Stem Adapter 3/8" Stem X 3/8" MNPT for drinking water systems - SOLD IN PAIRS

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    $5.99
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  44. JOHN GUEST- Faucet Connector 1/4'' Tube x 7/16''-1000
    John Guest CI3208U7S Faucet Connector 1/4" Tube X 7/16 Pipe Thread
    John Guest CI3208U7S Faucet Connector 1/4" Tube X 7/16-24 UNS Thread
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    $4.99
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  45. JOHN GUEST- Faucet Connector 3/8' -' Tube 7/16''- 1000
    John Guest CI3212U7S Faucet Connector 3/8" Tube
    John Guest CI3212U7S Faucet Connector 3/8" Tube X 7/16-24 UNS Thread
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    $5.99
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  46. JOHN GUEST- PPSV040808W- In-Line Shut-Off Valve- 1/4''- 1000
    John Guest PPSV040808W In-Line Shut-Off Valve 1/4" Tube
    John Guest PPSV040808W In-Line Shut-Off Valve 1/4" Tube X 1/4" Tube
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    $9.99
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  47. JOHN GUEST- PPSV041212W- In-Line Shut-Off Valve 3/8'' - 1000
    John Guest In-Line Shut-Off Valve 3/8" Tube - PPSV041212W
    John Guest PPSV041212W In-Line Shut-Off Valve 3/8" Tube X 3/8" Tube
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    $10.99
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  48. JOHN GUEST- PI061208S- Reducer 3/8'' & Stem X 1/4'' Tube- 1000
    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
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    $5.99
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  49. PVC Tee -1/4" FNPT SCH80
    PVC Tee -1/4" FNPT SCH80
    1/4" PVC Tee FNPT SCH80
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    $16.50 Special Price $7.95
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  50. Jaco Branch Tee Connector Fitting For Water Filter Systems 1/4" Tube X 1/4" MNPT X 1/4" Tube
    Jaco Branch Tee Connector Fitting For Water Filter Systems 1/4" Tube X 1/4" MNPT X 1/4" Tube
    Jaco Branch Tee Connector 1/4" Tube X 1/4" MNPT X 1/4" Tube
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    $3.99
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Page
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.

SEE OUR ONLINE HELP GUIDE

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