FFDP series Hydraulic Flat Face Quick Couplings, preventing the entry of harmful particles into the system thanks to their easy cleaning, as well as providing the opportunity to work without hydraulic loss thanks to their flat faces. The manual locking mechanism on the ring provides safety against unintentional connection and disconnection. FFDP series Hydraulic Flat Face Quick Couplings, which are mounted under hydraulic pressure, provide the opportunity to re-attach to the female adapter by overcoming the pressure remaining in the system when the male end is removed while under pressure.