A Double Check Valve Quick Release Coupling (QRC) is a specialized connector designed to prevent fluid loss during disconnection in hydraulic, pneumatic, and chemical systems. Unlike standard quick-release couplings, both the plug and socket of a double check valve QRC incorporate built-in check valves. This design ensures that when the coupling is disconnected, the valves automatically close, effectively sealing the system and preventing leakage. citeturn0search0