SINGLE SHUT-OFF COUPLINGS

Parker Stratoflex’s single shut-off coupling (SSC) is designed with self-sealing valving to prevent fluid leakage when disconnected from the fluid system. The SSC provides one-side sealing of fluid when disconnected. Used in aircraft hydraulic systems and located at the interface of the engine-driven pump or similar equipment, the SSC is installed on the flexible hose assembly and threads on to an industry standard fitting at the pump, SAE AS4375, AS33514 or bulkhead fitting equivalents.
Operation and use of the SSC is simple, positive and reliable. In the fully connected and torqued (installed) position, the SSC valving is open to flow and provides low pressure drop performance. To uncouple, the SSC outer collar is untorqued and unthreaded from the mating standard male fitting. As the SSC is unthreading, the internal valving seals and prevents excess loss of fluid from the SSC and flex hose side of the connection. The standard fitting side remains open, with no self-sealing valving on that side of the connection to retain fluid. Once fully disconnected, the pump or mating equipment and fitting are able to be removed and replaced as required.