John Guest female adapter with BSP/BSPT thread
Family of adapters for connecting tubing via push‑fit system to a threaded connection of the size indicated in each variant. The range includes metric and imperial combinations.
How to read the variants
Each option shows two pieces of data: the thread and the tube size. Both must match. The available variants include combinations with 5/16", 3/8" and 1/2" tube and different BSP/BSPT threads depending on the selected option.
Compatibility
Do not choose a thread solely by its approximate diameter. BSP, BSPT and other standards may share similar nominal sizes and still not be interchangeable.
Installation
With the circuit depressurized, prepare the tube with a clean, perpendicular cut, insert fully, and fit the appropriate thread. Avoid side loads on the body of the fitting.
Best practices
In installations with many transitions, identify the size of each line and label the equipment thread. This reduces errors in future replacements.
Frequently asked questions
Do all variants use the same thread?
No. You must check the exact option selected.
Is it suitable for both metric and imperial tube?
The range includes different combinations; check the specific variant.
Can I force a thread that looks almost the same?
No. Both the standard and the size must match.
What should I check before buying?
Outside tube diameter, thread type and nominal connection size.
