Red Valve Company, Inc. • 700 North Bell Avenue, Carnegie, PA 15106 • 412 279-0044 • Fax 412 279-7878 • www.redvalve.com Application Data Original Screw Conveyor System with Butterfly Valve and Expansion Joint A major chemical company in the south selected Red Valve’s Series 5300 Open Frame Control Valve to replace the alloy 20 butterfly valve and the expansion joint that was used to control the flow of fluorspar between the two screw con

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