FUELING SYSTEMS AND FLUID CONTROL DEVICES THEREFOR-NAMELY, FLOAT BOTTOM FILLING VALVES, VENT VALVES, RELIEF VALVES, PILOT VALVES, PILOT SOLENOID CHECK-OUT VALVES, FUEL LEVEL CONTROL VALVES, BY-PASS VALVES, FUEL LEVEL TOP AND BOTTOM FILLING VALVES, PISTON TYPE FLOAT VALVES, ADAPTER VALVES, FUELING AND DEFUELING VALVES, SHUT-OFF VALVES, CHECK VALVES; TRANSFER VALVES, PRESSURE REGULATORS; ADAPTER ASSEMBLIES FOR GROUND REFUELING; ADAPTERS AND CAPS; FUELING NOZZLES; TANK AND AUTOMATIC DISCONNECTS; COUPLINGS; UMBILICAL CONNECTORS; FUEL FILTERS; FUEL STRAINERS; SOLENOID ACTUATORS; FUEL FLOW INDICATOR SWITCHES; SEALS; FLOATS; AND HAND TOOLS FOR OVERHAUL