Quick closing valve actuator

摘要: This valve is opened against the force of a spring by motiontransmitting means operated hand wheel or other conventional valve-operating mechanism. The invention provides quick release mechanism between and to from its connection with so that can cause instantaneous closing valve. In preferred construction, balls extending into path retainer hold under load imparted it hand-operating A pin moves groove they move inward out retainer; this causes advance position close closed. Movement connections closed resets for reopening