John Guest Quick Connect Fittings
Easy to use, leak-free push-in fittings.
John Guest quick connect fittings are the most popular choice in beverage and pure water tube fittings.
Order by part number or by description. If you don't see the fitting you need, give us a call. It may also be available in our selection of Mur-Lok fittings
Threaded Fittings
Common connector fitting for FNPT threaded ports. Used to add quick-connect fitting connections to any filter housing or component with a threaded port.
Install into FNPT ports on filter housings or components. Useful to convert an existing port size to a different quick-connect tube size.
Install into the FNPT port of any filter housing or component. Useful and widely used to add quick-connect fitting connections to existing systems and housings. Elbow fittings allow for tubing connections in confined spaces.
Install directly into the FNPT ports of a filter housing. Used to convert existing port sizes to a different tubing size.
Union Fittings
Quick-connect fittings on both ends. Used to securely join two sections of tubing at a right angle.
Quick-connect fittings on both ends. Use to securely join two sections of tubing of the same size.
Quick connect fittings on both ends. Used in a variety of applications to change an existing tube up or down in size.
Quick-connect fittings on all three sides. Used to join three sections of the same sized tubing. Useful for adding extra storage tanks. Splitting outputs to multiple locations. Adding sample ports and bypasses.
Useful for sample ports, or any application where a tubing size change is needed.
Stem Fittings
Used to convert an existing quick-connect fitting to a different sized quick-connect. The stem side should be sized for the existing fitting, the quick connect portion for the new tubing size.
The stem of the plug-in elbow connects to an existing quick connect fitting. These are useful to provide a swivel connection where an existing quick-connect is already installed.
Valves
High Quality inline valves are used as a shutoff valve in a variety of applications. We use inline valves as main shutoff valves for all of our undersink and reverse osmosis systems.
Every storage tank should have a shut off valve. Has a 1/4" female thread, compatible with nearly every residential RO storage tank. Quick connect fitting should be sized to match your tubing.
Refrigerator/Faucet Fittings
Quick connect fitting adapter with the common 7/16" female thread. Compatible with 1/4" male compression threads found on most refrigerator water supply lines and RO faucet stem threads.
Bulkhead Unions
Plugs and Caps
Stem plugs can be inserted into an existing quick connect fitting as a water tight plug or termination.
Preventing and Fixing Leaks
Learn how to prevent and fix leaks in quick connect fittings
Site Index
Filtration Systems
- Aeration for Iron & Sulfide
- Backwashing Filters
(whole house & well units)
- Chlorine & Chemical Injectors
- Countertop Water Filters
- Garden Hose Filters
- Reverse Osmosis, Residential
- Reverse Osmosis, Commercial
- Shower Filters
- Specialty Filters
- Ultraviolet Systems
- Undersink Filters
- Water Softeners
- Whole House Filters
Cartridges
Parts
- Replacement Parts
- Faucets
- Filter Media
- Fittings
- Housings
- O-rings
- Pura UV
- R.O. Parts
- R.O. Tanks
- R.O. Booster Pump
- VIQUA UV