Overview

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The Nordson Iso-Flo® voltage block offers an easier, safer and far more cost-effective way to spray electrostatically charged waterborne coatings. The system supplies charged coating to the spray devices while preventing the charge from conducting back through the paint-supply system. For many finishing operations, the most cost-effective way to reduce VOC emissions is to convert from solvent-based to waterborne coatings. But due to the higher electrical conductivity of waterborne coatings, it is necessary to isolate the charged paint-supply system from any ground source. Nordson Iso-Flo systems are built for the most demanding finishing requirements with high-capacity, field-repairable pumps that provide long life with minimal maintenance. The automatic Iso-Flo System allows continuous coating to be sprayed for more production output.

• Rugged construction for the most demanding finishing operations
• High-capacity, field-repairable pumps provide long life with minimal maintenance
• Innovative arc-suppression feature that allows continuous coating without delay between cycles
• Includes paint reservoirs sized for productivity and paint savings
• Factory Mutual and CE approved

 

How the Iso-Flo HD System Works

An Iso-Flo HD manual or automatic voltage block is installed near the spray booth, and is connected between the grounded paint-supply system and the spray devices. Coating is pumped from the paint-supply system to paint reservoirs inside the voltage blocks. Electrostatic isolation is maintained with a series of shuttle valves that alternately connect the reservoirs to the grounded paint supply and the spray devices. Manual Iso-Flo HD configurations are available for single-gun manual painting systems. The automatic Iso-Flo system can supply charged coating to mupltiple automatic spray guns.

 

Iso-Flo System for Automatic Spraying

The Iso-Flo unit for automatic spraying contains two paint reservoirs to provide a continuous uninterrupted flow of paint. One reservoir supplies charged coating to the spray devices while the second reservoir refills from the grounded paint supply. Once the second reservoir is filled, it disconnects from the spray devices, connects to the paint supply and refills. The reservoirs hold enough paint to ensure a continuous supply of charged paint to the spray devices. And since air gaps are maintained between the shuttles, the electrostatic charge will not conduct back through the paint-supply system.