Metal coupler adapter 3/8 x 1/4 FFL brass thread

John Guest metal adapter for 3/8" × 1/4 FFL head

Metal adapter to connect a 3/8" (9.5 mm) tube line to a component or coupler that uses a 1/4 FFL thread.

When to use it

It is suitable when you want a direct transition between the push-fit line and a 1/4 FFL connection, which is common in certain dispensing accessories.

Selection

Confirm that the tube is 3/8" and that the threaded connection is 1/4 FFL. Do not select it for MFL, NPTF or BSP unless there is a specific additional adapter.

Installation

Depressurize the system, assemble the threaded side without forcing and prepare the tube with a straight cut. Insert fully to the stop and check for leaks.

Maintenance

Monitor the condition of the tube next to the fitting and avoid lateral stresses caused by hoses that are too short or misaligned.

Frequently asked questions

What tube size does it use?
3/8".

What thread does it have?
FFL 1/4.

Is it an adapter for a coupler?
Yes, it is intended for that type of compatible mounting.

What should be checked before installation?
Tube size, thread standard and mechanical alignment.