Genuine PCL Airflow Coupling with a 1/4" BSP Male Thread. This is the original quick-release coupling with over 50 years of design enhancements, manufactured in the UK to the highest standards and designed for fixed applications. It is compatible with the Standard range of Adaptors and features a robust and hardwearing steel construction. The coupling has a positive locking mechanism, a nominal bore of 4.8mm, a maximum flow rate of 43cfm @ 100lbf/in², and a maximum working pressure of 200lbf/in² (14bar). It is a single-action type. The 'Industry Standard' coupling is suited for air tools, garage, industrial air line supplies, and test panels, with a free air flow rate at 7bar/100psi: 35 to 42cfm. Each coupling has a zinc-plated all-steel construction with a positive single locking action to prevent accidental dislocation, a British Standard Profile, and is date stamped for traceability. A blue PCL silicone band is included for identification, protection, and ease of use. Typical applications include Automotive and Engineering. Available in a pack of 5.