The AirFit Pneumatic Fittings are built for reliability under pressure — whether you're installing a full air system or sorting a quick repair, 

these fittings are fast, tough, and ready to work.

Tested up to 10 Bar and proven in both high heat and sub-zero temps, they’re not just for air — they’ll handle water and vacuum too.

Premium-quality fittings that hold their own in any workshop – no fuss, no leaks.

British Standard Pipe Sizes

BSP sizes don't match up with what you measure on the scale of a ruler, which can obviously cause some confusion. For example, a 1/2 inch BSP thread actually measures more like 3/4 inch with a ruler.

The size was originally based on the inside diameter, measured in inches, of a steel pipe for which the thread was intended. This is the source of the confusion, as people incorrectly think the size refers to the outside diameter of the male thread.