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Pumps & Control Valves



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In the context of application in the loss-in-weight feeding of critical liquids, slurries or pastes whose specific gravity varies sufficiently to warrant gravimetric flow control, a holding tank and pump or control valve replaces the standard hopper and metering device combination required in the feeding of solid materials.

Because loss-in-weight feeding involves weighing the entire material containment and handling apparatus, the type of pump or control valve employed becomes irrelevant. Any type of pump or control valve appropriate to handling and controlling the material is permissible.
 

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