“FIRG” is the initial series of flat-faced couplings. The “FIRG” series, designed in 1983, was quickly recognized as a key invention in the field of rapid couplings. Used in a variety of hydraulics applications, it has evolved into the leading series for achieving the worldwide standard ISO 16028 for coupling interchangeability. Because of its high performance and numerous advantages, the “FIRG” series is still widely utilized and acknowledged by the world’s leading hydraulic machine and equipment makers. It is employed in all applications where fluid loss and circuit contamination are to be avoided
