Danfoss ETS 8M electric expansion valve (8M40 to 8M65)

The Danfoss ETS 8M is a stepper motor electric expansion valve for modular chillers, low ambient heat pumps and medium capacity refrigeration systems, from 60 to 114 kW with R410A. It comes in four orifices, from 4.0 to 6.5 mm, with two flow curves: linear (L) or S-shaped (S), finer at low opening. Bi-flow, it works equally well in normal and reverse flow.

The name gives the orifice and the curve: ETS 8M40L = 4.0 mm orifice, linear curve; ETS 8M45S = 4.5 mm orifice, S-shaped curve.

ETS 8M models

Danfoss rated capacity with R410A, normal flow: evaporating +5 °C, condensing 38 °C, liquid 34 °C, 500-step opening. Reverse flow capacity is slightly lower (55.6 to 103.2 kW). Copper angle connections.

Key benefits

• High MOPD: 39 bar in both directions, to follow the whole compressor operating envelope.
• Low internal leakage: below 800 cm³/min at 10 bar; stable control at low opening, with a dedicated heat pump curve.
• Flexible installation: valve can be tilted up to 90° either side of vertical; IP67 coil, unipolar or bipolar.
• Refrigerants: R410A, R32, R407C, R290, R454B, R452B, R454C, R513A, R449B, R404A, R448A, R449A, R515B, R452A, R134a and R1234ze. Flammable refrigerants validated according to ATEX, EN 378, ISO 5149 and IEC 60335.
• Oil-free systems possible with R1234ze, R515A, R134a and R513A.

Common specifications

• Maximum working pressure 49 bar; fluid and ambient temperature −30 to 70 °C; POE, PVE and PAG oils.
• 12 V DC coil; 500 half steps; 30 to 90 pulses per second; valve delivered open at 300 steps.
• Operating noise below 60 dB(A) at 15 cm.

Coils, ordered separately

• Bipolar coils, 3.5 mm pitch connector, to be used with a Danfoss EKE controller: 2 m (034G8350), 3 m (034G8351) or 6 m (034G8352) cable.
• Unipolar coils, JST XHP-5 connector: 0.7 m (034G8306), 2 m (034G8300), 3 m (034G8301) or 6 m (034G8302) cable; JST XHP-6 connector: 2 m (034G8303), 3 m (034G8304) or 6 m (034G8305).

To drive the valve, see our Danfoss EKE 1 superheat controller.

Afric Froid, your Danfoss supplier

Afric Froid supplies Danfoss ETS electric expansion valves, their coils and 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 model and send you a quote.