183.528—Fuel stop valves.
        
        (a) 
         Each electrically operated fuel stop valve in a fuel line between the fuel tank and the engine must:
    
    
    
    
        
        (b) 
         If tested in accordance with the fire test under  § 183.590, a fuel stop valve installed in a fuel line system requiring metallic fuel lines or “USCG Type A1” hose must not leak fuel.