This EH series is interchangeable with STUCCHI A SERIES, FASTER FFH SERIES, PARKER FEM SERIES, CEJN X65 SERIES, DIXON HT SERIES, DNP PLT4 SERIES, VOSWINKEL FH SERIES, and GROMELLE 629-A SERIES. Steel Product. The Premier Series Flat Face Couplings, engineered to ISO 16028 interchange standards, deliver exceptional hydraulic performance with higher pressure ratings, optimized flow efficiency, and reduced pressure drop—outperforming both EH 95 Series and competing products. Designed for critical no-leak applications, these couplings feature a non-spill flat-face valve system that eliminates fluid loss during coupling/uncoupling, making them the ideal choice for contamination-sensitive hydraulic systems. Their precision engineering ensures reliable operation while maintaining full ISO compatibility for seamless integration.