Danfoss ETS 12.5 to ETS 400 electric expansion valve

The Danfoss ETS 12.5 to ETS 400 are bipolar stepper motor electric expansion valves for injection into medium and large evaporators: cold rooms, refrigeration racks, chillers and air conditioning. The balanced piston and linear positioning give very precise control, in both flow directions, with solenoid-tight closing. Five sizes cover 43 to 1,320 kW with R404A.

ETS sizes

Danfoss rated capacities: evaporating +5 °C, liquid 28 °C, condensing 32 °C, full stroke, normal flow. ETS 12.5, 25, 50 and 100 also come as CO2 (R744) versions, with 7/8 in or 1 1/8 in connections.

Key benefits

• Bi-flow and tight in both directions: the valve also replaces the liquid line solenoid valve.
• Sight glass with moisture indicator on ETS 50, 100 and 400: it shows the piston position, the flow direction and the refrigerant condition.
• Easier brazing on ETS 50 and 100: bi-metal stainless steel and copper connections, no wet cloth needed.
• CO2 (R744) versions of ETS 12.5 to 100, for use as loading or unloading valves.
• Sealed M12 connector (IP67), 2 m (034G7073) or 8 m (034G7074) angle M12 cables.

Common specifications

• Maximum working pressure 45.5 bar (ETS 12.5 to 100) or 34 bar (ETS 400); MOPD 33 bar in normal flow, 33 bar in reverse flow (10 bar for ETS 400).
• Fluid temperature −40 to 65 °C, ambient −40 to 60 °C; mineral and ester oils.
• Refrigerants: R1234ze, R134a, R22, R404A, R407A, R407C, R407F, R410A, R422B, R422D, R438A, R448A, R449A, R450A, R452A, R507 and R513A.
• Bipolar motor, 12 V DC voltage drive (5.5 W) or 100 mA current drive; full stroke in 17 s (ETS 12.5 to 50), 23 s (ETS 100) or 25.4 s (ETS 400) with voltage drive, twice as fast with current drive.
• Brass body, copper connections (bi-metal on ETS 50 and 100).

To drive the valve, see our Danfoss EKE 1 superheat controller. For small capacities, see also the AKV 10P electric expansion valve. See also the ETS Colibri valve, in hermetic stainless steel and suitable for oil-free systems.

Afric Froid, your Danfoss supplier

Afric Froid supplies Danfoss ETS electric expansion valves and their controllers, installs them and provides after-sales service in Tunisia, Algeria, Senegal and Ivory Coast. Tell us the refrigerant, capacity and temperatures: we will choose the right size and send you a quote.