The John Guest Acetal Reducing Bulkhead Union delivers reliable, tool-free connections for water filtration systems requiring different tube sizes through a panel or tank wall. Manufactured in the UK with precision-engineered collet technology, this grey acetal fitting ensures leak-free performance in residential and light commercial applications.
SPECIFICATIONS
Technical Details
| Manufacturer | John Guest Speedfit |
| Material | Acetal (POM) with stainless steel collet |
| Connection Type | Push-to-connect reducing bulkhead union |
| Color | Grey |
| Application | Through-panel water line connections |
| Assembly | UK designed and manufactured |
| Release Method | Collet push-release mechanism |
| Grip System | Grip-then-seal collet arrangement |
INSTALLATION & USE
Quick Connect Installation
- Cut tubing square and ensure the outer diameter is clean and free from burrs or damage
- Push the fitting fully onto the tube until it bottoms out against the internal tube stop
- Install through panel opening and secure the bulkhead nut from the opposite side
- To disconnect, push the collet ring toward the fitting body while pulling the tube to release
COMPATIBILITY
System Integration
The John Guest Reducing Bulkhead Union is designed for use with reverse osmosis systems, water filtration tanks, and any application requiring a reducing connection through a wall or panel. Compatible with John Guest tubing and fittings across residential water treatment systems. Ideal for connecting different tube sizes when mounting pressure tanks, storage reservoirs, or filtration housings. The acetal construction provides excellent chemical resistance and durability in potable water applications.
🔧 Pro tip: Mark the insertion depth on your tubing before installation so you can verify full engagement. A properly seated tube should insert approximately 15-20mm depending on size, and you'll feel a distinct stop when the collet fully grips.
