Danfoss has launched new electric expansion valve for CO2 installations.
The new ETS 5T offers a reliable, robust valve in a compact size. The company is also introducing an enhanced version of its successful ETS 5M valve, covering an even wider range of applications.
The ETS 5T is the latest step in Danfoss’ ongoing efforts to support the refrigerant transition and provide HVACR professionals with the widest possible choice when designing CO2-based refrigeration systems.
Global solutions expert at Danfoss Climate Solutions, Mark Sever, said CO2 refrigeration systems have been the company’s focus for over 15 years.
“During that time, we’ve seen how food retailers have embraced this natural refrigerant as an attractive alternative to HFCs, with as many as 10,000 supermarkets switching to CO2 refrigeration systems each year. And with this newest addition to our electric expansion valve portfolio, we support an even wider range of CO2 systems, from the small, transportation units to large, transcritical installations.
The ETS 5T features the same compact design as Danfoss’ ETS 5M, which is the smallest electronic expansion valve (EEV) on the market.
The 5T version is designed for CO2 applications from 4 to 19 kW, has a maximum working pressure (MWP) of 140 bar and a maximum operating pressure differential (MOPD) of 120 bar for transcritical CO2 systems.
It supports a refrigerant temperature range from -40 to 80 degrees Celsius and an ambient temperature range of -40 to 80 degrees Celsius. The ETS 5T also supports bi-directional flow, operating at full performance in normal and reverse flow directions.
These features make the ETS 5T suitable for a wide range of applications.
Danfoss Climate Solutions EEV product manager, Wei Vincent, said the ETS 5T is an ideal choice for transport air conditioning systems, condensing units and display cases and cabinets, as well as in reversible systems.
Danfoss has also made enhancements to its existing ETS 5M valve, giving HVACR professionals more flexibility when designing systems.
“We’ve added a bipolar coil extension which offers the higher performance level as a unipolar coil, while using the same current,” Vincent said.
“The new coil has a lower heat loss, which extends the valve’s lifetime, and it’s compatible with our EKF and EKE 100 stepper valve SH controllers and drivers.”
The upgraded valve supports a Max Working Pressure (MWP) of up to 49 bar, an MOPD of up to 42 bar, in both flow directions, and a temperature range of -40 to 80 degrees Celsius. It’s also corrosion and vibration resistant which makes it suitable for harsh environments.
With its compact form and wide range of orifice sizes, the upgraded ETS 5M can work even with smaller systems.
“The 5M valve now comes with 0.8 and 1.0 orifices, which are ideal for residential heat pumps, cold rooms and transportation refrigeration,” Vincent said.
The new version of the ETS 5M is suitable for A1, A2 and A3 refrigerant applications and is expected to attain UL certification by the end of 2025.
Vincent said both valves feature ‘Clip & Turn’ fixation, which makes them easy to install.
“The connector has a bi-metal design, which means installers don’t need to cool the valve body during installation. And you get a simpler system design with lower applied costs as the valves offer a high MOPD in both directions,” he said.