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What Does the Powder Pump Do?The powder pump supplies powder to the gun in a uniform and steady rate. Powder pumps usually use a venturi to deliver the powder from the supply hopper to the powder spray gun. For first-pass transfer efficiency, the operator wants to use the lowest flow rate as possible while still maintaining coverage through each spray gun being used. The reason for this is that the more powder that passes over the gun electrode creates a shielding so that each particle picks up less of a charge. Therefore, less powder is more effective when dealing with transfer efficiency. To achieve first-pass transfer it is better for companies to add additional powder guns and maintain outputs low than to increase the output of the existing guns. The majority of powder pumps are made with engineered plastic to provide the maximum resistances against wear. In addition, many are available in configurations for either corona-charging or Tribo-charging spray gun systems. |
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