Red Valve Company, Inc. 700 N. Bell Avenue, Carnegie, PA 15106 • 412 279–0044 • FAX 412 279–7878 Application Data A power plant in the midwest was continuously having to repair standard soft-seated knifegate valves on their Pyrite ash system. The ash would stick to the gate and be pulled up into the packing gland area each time the valve was cycled. The abrasive ash would quickly wear the packing and cause the valves to leak under pres- sure.

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