The John Guest Polypropylene Bulkhead Union Quick Connect Fitting delivers tool-free installation through panels, tanks, and enclosures with a push-to-connect collet system engineered in the UK. Built from food-grade polypropylene with nitrile O-rings, this white bulkhead union handles potable water, air, CO2, and vacuum lines with equal reliability.
SPECIFICATIONS
Technical Details
| Manufacturer | John Guest Speedfit |
| Material | Polypropylene (Acetal body) |
| Seal Type | Food-grade nitrile O-ring |
| Connection Method | Push-fit collet with grip-and-seal |
| Fitting Type | Bulkhead union (panel mount) |
| Color | White |
| Suitable For | Water, air, CO2, inert gases, vacuum |
| Origin | Designed and assembled in UK |
INSTALLATION & USE
How to Install
- Drill appropriate diameter hole through the panel, tank wall, or enclosure where the bulkhead connection is needed
- Insert the bulkhead fitting through the hole and secure from the opposite side according to the union design
- Push the tubing fully into the quick connect collet until it bottoms out and seats against the internal grip ring
- Turn the threaded component onto the mating thread (for female coupler applications like taps or appliances)
- To disconnect, unlock the retaining nut, push the collet toward the fitting body, and pull the tubing free
COMPATIBILITY
Application Range
This John Guest bulkhead union is compatible with reverse osmosis systems, water filtration enclosures, beverage equipment, pneumatic lines, and any application requiring a sealed pass-through connection. The food-grade polypropylene construction and nitrile seals make it suitable for potable water, foodstuff contact, CO2 carbonation systems, compressed air, and vacuum applications. Verify tubing outer diameter matches the fitting size before installation to ensure proper collet engagement and leak-free performance.
🔧 Pro tip: Before pushing tubing into the collet, cut the tube end square with a proper tube cutter and ensure no debris or burrs are present. A clean, square cut ensures the collet grips evenly and the O-ring seals completely against the tube outer diameter.
