Instructional video on how to disassemble and rebuild a Jordan Valve Mark 78 Series Control Valve.
The Mark 78 pneumatic control valve is designed for accurate performance and simplified maintenance. It can be used on a variety of applications including viscous/corrosive liquids, process gases, or utility steam in process or utility service.
The Mark 78 utilizes a cage-retained seat design with an unbalanced plug. The top entry cage design allows maintenance while the valve is in the line. The trim comes
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