Patent ID: 6805328
Filing Date: 2004-10-19
Classification: F16K,Y10T

Abstract:
A shut-off valve apparatus comprisinga valve body and a valve member coupled to the valve body, the valve member being movable between a first position blocking material flow through the valve body and a second position permitting material flow through the valve body, a pneumatic actuator that, when actuated by pressurized air, moves and interacts with the valve member being isolated from the pressurized air to move the valve member from the first position to the second position, a manifold having a first portal configured to receive pressurized air, a second portal coupled to the pneumatic actuator, and an exhaust portal, regulator means coupled to the manifold for closing the exhaust portal in response to pressurized air being communicated to the regulator means through the first portal and for passing pressurized air to the second portal when pressurized air is communicated to the regulator means through the first portal, the pneumatic actuator being actuated by pressurized air exiting the manifold through the second portal, and an electrical actuator configurable between a blocking position blocking pneumatic communication between the first portal and the regulator means and an unblocking position allowing pneumatic communication between the first portal and the regulator means.