Abstract: A spring-loaded valve actuator assembly having a hollow handle containing a compression spring urged against a movable piston attached to one end of a cable such that the handle remains in the valve-shut position when the handle is at rest. The other end of the cable is secured to the valve housing at an anchor adjacent to an arcuate guide and is in tension at all times to provide spring compression that normally urges the handle toward the shut position. The handle is connected to a rotatable ball valve contained in a valve housing situated in a conduit pipe fluid line, so that it can rotate the ball valve from the full closed to the full open position. As actuating force on the handle is decreased, the handle moves automatically toward its biased shut position because of the stored compression force of the spring which is constantly exerted against the piston inside the handle.