Patent ID: 9157535
Filing Date: 2015-10-13
Classification: F15B,F16K,Y10T

Abstract:
1. A system for actuating a plurality of pneumatic valves, comprising: first and second pneumatic valves coupled to a fluid source via a supply conduit, such that pressure of fluid from the fluid source causes the first and second pneumatic valves to open; third and fourth pneumatic valves coupled to the fluid source via the supply conduit, wherein the first and second pneumatic valves are disposed upstream of a piece of equipment, and the third and fourth pneumatic valves are disposed downstream of the piece of equipment; a manual valve coupled to the supply conduit between the fluid source and the first, second, third and fourth pneumatic valves, and configured such that closing the manual valve (a) isolates the first, second, third and fourth pneumatic valves from the fluid source, (b) shuts off a flow of the fluid from the fluid source to the first, second, third and fourth pneumatic valves, and (c) causes the first, second, third, and fourth pneumatic valves to close and positively isolate the piece of equipment from a process fluid, wherein the process fluid and fluid from the fluid source are in distinct circuits; and a fifth pneumatic valve coupled to the fluid source via the supply conduit, wherein the manual valve is configured such that closing the manual valve causes the fifth pneumatic valve to open.