John Guest 3/8" × 1/4 MFL male adapter
Fitting to connect 3/8" (9.5 mm) tube to a 1/4 MFL connection. It is a compact solution for integrating push-fit tubing with dispensing components that use this standard.
Compatibility
Check that the component is actually 1/4 MFL and that the line is 3/8". MFL and FFL describe different complementary connections and must not be confused with NPTF or BSP.
Installation
Work with the system depressurised, cut the tube square, insert it fully and connect the threaded part in alignment. Check for leaks before operating.
Maintenance
Check the tube end when disassembling and avoid reusing sections that are marked or deformed.
Frequently asked questions
What tube does it use?
3/8" (9.5 mm).
Is the thread FFL?
No, this reference is MFL.
Is it suitable for Ball-Lock components?
It can be used in compatible assemblies when the component connection is 1/4 MFL.
Are tools needed for the tube?
The tube connection is push‑fit; it is important, however, to prepare the end correctly.
