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New Nordson Encore® HD Automatic Powder Spray Guns Allow Easy Adjustment of Powder Concentration and Spray Velocity to Achieve Optimum Coating Coverage and Cured Finish Quality



  • Better process control through an integrated coating solution, incorporating the Encore HD gun, the Nordson HDLV® dense phase pump and iControl® integrated control system 
  • Produces a “softer” and more thoroughly charged powder cloud for optimum transfer efficiency
  • Dense phase pump eliminates wear and ensures consistent powder output over time
  • Pump and gun provide exceptionally fast, contamination-free color change 


AMHERST, OH, November 18, 2013 – Nordson Corporation (NASDAQ-NDSN), a leader in liquid and powder coating technologies, introduces Encore HD Automatic Powder Spray Gun – the third, and most advanced, generation dense-phase powder spray gun from Nordson.  Encore HD guns incorporate a proprietary, integral HDLV module* that is designed to work with Nordson HDLV pump technology for superior spray versatility and performance. Nordson will be exhibiting the new Encore HD Automatic Powder Spray Gun at FABTECH 2013 in St. Louis, Booth #S5324.

Nordson HDLV – or “High Density Low Velocity” technology – delivers a high concentration of powder, but using very little air. An integrated coating solution, the system includes the Encore HD gun, the Nordson HDLV dense phase pump and iControl integrated control system to achieve the ultimate in process control.

“Using HDLV technology, the unique and innovative Encore HD gun design allows easy adjustment of the powder concentration and spray velocity to achieve optimum coating coverage and cured finish quality for every conceivable part type,” explains Bob Allsop, North American marketing manager for Nordson Powder Coating.  “The gun can easily go from a highly dense phase spray to a more diluted (powder and air) mixture, and everywhere in between.”

HDLV Gun Pump is the Key to Control and Quality
Central to the system operation is the HDLV dense phase gun pump, which operates much differently than a traditional venturi pump. Venturi pumps use high velocity air, which – when coupled with abrasive powders and/or high powder output rates – causes them to wear over time. They also wear at different rates, requiring frequent adjustments to the gun settings to achieve consistent output.

The Nordson HDLV gun pump does not use a venturi throat, which means it does not wear out. As a result, powder output stays consistent over time. Additionally, the pump meters powder to the gun using less air to propel it – in fact, it is four times slower. This provides better charging as the aerodynamic forces are secondary to the electrostatic forces, producing a “softer” and more thoroughly charged powder cloud. The optimized electrostatic time provides better coverage into Faraday cage areas and improves overall transfer efficiency.

In addition, in a traditional venturi powder pump, the atomizing air and the flow rate air interact, producing
non-linear output. This is difficult to control and can lead to inconsistent results. Nordson HDLV technology removes the guesswork and variables in repeatability and uniformity, replacing it with simple, linear output control. This simplifies equipment set-up and adjustments.

Other features include:

  • Fast, contamination-free color change -- Encore HD guns are perfectly suited for use with the ColorMax® fast-color-change powder coating and recovery booth systems, providing reclaim-to-reclaim color change in generally 5 to 10 minutes
  • iControl system – provides up to 255 user-configurable presets for part identification and in/out positioning of reciprocators and oscillators, as well as speed and stroke of reciprocators.
  • Tube mount and bar mount versions -- both with a width of only 1.93 in. (4.90 cm) to minimize surface area to clean during color change.
  • Optional components to enhance performance – a variety of nozzles and accessories help provide optimum spray coverage; ion collectors can enhance finish quality and coating appearance in some applications.


“With many design enhancements, Encore HD automatic guns take operating efficiency and coating performance to an even higher level,” says Allsop.

For more information on Encore HD Powder Spray Guns or other Nordson powder coating technologies, visit or contact Bob Allsop at 440.985.4459/

Nordson Corporation engineers, manufactures and markets differentiated products and systems used for the precision dispensing and processing of adhesives, coatings, polymers and plastics, sealants, biomaterials and other materials and for fluid management, test and inspection, UV curing and plasma surface treatment, all supported by application expertise and direct global sales and service. Nordson serves a wide variety of consumer non-durable, durable and technology end markets including packaging, nonwovens, electronics, medical, appliances, energy, transportation, construction, and general product assembly and finishing. Founded in 1954 and headquartered in Westlake, Ohio, the company has operations and support offices in more than 30 countries. Visit Nordson on the web at, or

* patent pending