This EH series is interchangeable with CEJN 525 SERIES, STUCCHI IRC SERIES, TEMA T SERIES, PARKER H SERIES, DIXON TR SERIES and DNP PTV1 SERIES. Steel Product. The 100 Series Interchange Coupler (Nordic-type) combines advanced safety and reliable sealing for demanding hydraulic applications. Its protective safety sleeve prevents accidental disconnection, while the elastomer-sealed poppet valve ensures leak-free performance when disconnected. The series offers dual poppet options—standard and pressure-eliminator variants—to meet diverse system requirements. Designed for flexible operation, these couplers allow connection under residual pressure (male or female side), provided the counterpart is pressure-free, ensuring safe and efficient maintenance in industrial environments. 100 is the standard version, 200 is the connection under pressure version.