The 100 Series quick-release air coupling is the benchmark fitting for professional compressed air installations across the UK. Its high-flow internal bore — 10.3 mm nominal — ensures that the coupling itself never becomes the bottleneck in your air system, allowing pneumatic tools to operate at their rated capacity.

The female Rp 3/8 (BSP parallel) thread provides a secure, leak-resistant connection to manifolds, hose tails, and air-line components without the need for thread tape when used with a correctly seated O-ring face seal. The hardened steel construction resists the knocks, oils, and abrasives of a working workshop floor, while the precision-machined valve mechanism maintains consistent flow characteristics throughout the product's service life.

Whether you are fitting out a new workshop, replacing worn couplings on an existing air line, or specifying fittings for a manufacturing cell, the 100 Series delivers the performance and longevity that trade professionals demand.