Danfoss is marking 60 years since the T2 first entered production in Nordborg in 1966. The company said more than 65 million units of the T2 have now been produced worldwide, with the thermostatic expansion valve used in commercial refrigeration, heat pumps and comfort cooling systems.
According to Danfoss, the T2 builds on earlier expansion-valve developments dating back to 1933, when Mads Clausen developed the company’s first expansion valve. Danfoss said the product has been refined over six decades to address new refrigerants, environmental requirements, quality standards and production technologies, while keeping its core concept unchanged.
The company said these updates have included laser welding and engraving, stainless steel capillary tubes, nickel-free designs, automated production lines, expansion of production to China in 2008, digital tools such as Danfoss Coolselector and TXV tune, and new CO2 thermostatic expansion valves. Danfoss also said optimized applications can deliver up to 8-10% energy savings. By the T2’s 50th anniversary in 2016, the company said it had produced 50 million valves and estimated the product had contributed to 157,000 GWh in global energy savings.
To mark the 60-year milestone, Danfoss is also releasing a new online chapter as an appendix to The Golden Egg from Danfoss, a book about the history of the T2. “These fundamentals have allowed the T2 to remain relevant and trusted across generations of refrigeration technology. If the T2 taught us anything over the past six decades, it is that reliability never goes out of style,” said Niels Robert Arbjerg, Senior Vice President, Air Conditioning & Refrigeration Controls.
