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 and Connectors

Fittings and Connectors

 

Jaco ® Compression, John Guest SpeedFit, SMC, and Sea Tec Fittings and Connectors For Reverse Osmosis Drinking & Pure Water Filtration Systems

Be sure you order the correct size connectors and tube for the replacement filters for your drinking water system.


These two filters with the blue and orange "sanitary plugs" are female threaded and require a threaded fitting to be screwed into it.  The sanitary plugs are to be removed and discarded as the connector is installed.  The blue sanitary plug indicates 1/4" FNPT and the orange is 3/8" FNPT (Female National Pipe Thread) standard.

Replacement Water Filter Connector Sizes    Replacement Water Filter Connector Sizes

 

The following two filters show a 1/4" quick connector and a 3/8" quick connector.  Tube size is measured by the outside diameter of the tube.  Quick connect fittings are measured on the inside of the port.  

Replacement water filter quick connector sizing    3/8" water filter quick connector

Helpful Items

 

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  1. 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
  2. John Guest Super Speedfit Quick Connector - Male - Elbow
    John Guest ® Super Speedfit Quick Connector - Male - Elbow
    John 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
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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.