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AVTA Thermostatic Valve

AVTA Thermostatic Valve Provides Simple, Precise Temperature Control

17 June 2009
When the Danfoss AVTA thermostatic valve was introduced nearly 50 years ago, microchips were not part of our language.

Today, the AVTA is critical to the production of microchips, helping the 200 vacuum pumps in a typical chip manufacturing facility maintain the correct temperature while proving the valve’s versatility and longevity as an ideal component for simple and precise temperature control.

“Fit and Forget” Valve Delivers Reliability

While constant temperature is critical in chip manufacturing, it’s also important in other industries. Often, even minimal variations in temperature can have an adverse impact on product quality and profit.

The simplest way to ensure consistent temperature is by installing a Danfoss AVTA (or the larger WVTS) thermostatic valve. The AVTA needs no power, so if the electricity supply is interrupted, the cooling system won’t fail. The AVTA uses small changes in temperature to move the valve cone and proportionally change the coolant flow.

In addition, the AVTA:

  • is insensitive to dirt, increasing reliability while reducing maintenance costs,
  • is insensitive to water pressure, ensuring reliable function throughout the entire pressure range,
  • minimizes the consumption of cooling water,
  • can operate from 0 bar differential pressure,
  • adjusts the temperature to the required value with a high degree of precision, and
  • is easier to install than electrical control valve solutions
AVTA is used in newspaper production
Nearly 50 years after its introduction, the self-regulating valve remains a popular choice for hydraulic systems, compressors, vacuum pumps, dry-cleaning machines, distilling plants, printing machines, injection molding machines, rollers, plants with oil cooling and hi-tech applications, including the chip manufacturing.

Just as the variety of applications for the AVTA has evolved over the years, so has the valve itself. The AVTA is now available in de-zincification-resistant brass as well as acid-proof stainless steel and titanium, specially designed to cope with aggressive media. For more information on thermostatic valves and other Danfoss products, contact your nearest Danfoss dealer. Danfoss’ global presence means there’s a dealer near you.



By Wang Jianjun, application manager, China
Heat Exchangers

Heat Exchangers

Industrial heat exchangers are devices that facilitate heat transfer from a warmer to a colder medium with the target of highest possible efficiency and the lowest possible thermal loss.

Danfoss offers a wide variety of sizes and capacities in its product range.