Danfoss ETS 50-100-034G0508 electric expansion valve Technical data

Compatible refrigerants

Wide range for all common refrigerants R22, R134a, R404A, R407A, R407C, R407F, R422B,

R422D, R438A, R448A, R449A, R450A, R452A, R507, R513A, R410A, R1234ze and other

refrigerants.

Special valves for R744 (CO2) are available.

For other refrigerants, please contact your local Danfoss representative.

Refrigerant oil All mineral oils and ester oils and special ETS 250 and ETS 400 support oil free applications

Comply with P.E.D. Yes

Max. opening pressure

differential (MOPD) normal flow

33 bar (478.6 psi)

Max. opening pressure

differential (MOPD) reverse flow

ETS 12.5, ETS 25, ETS 50, ETS 100: 33 bar (478.6 psi)

ETS 250, ETS 400:  10 bar (145 psi)

Max. working pressure (PS/MWP)

ETS 12.5, ETS 25, ETS 50, ETS 100: 45.5 bar (660 psig)

ETS 250, ETS 400:  34 bar (493 psig)

Inlet fluid temperature -40 °C – 65 °C (-40 °F – 149 °F). For higher temperature valve, please contact Danfoss.

Ambient temperature  -40 °C – 60 °C (-40 °F – 140 °F)

Material of Construction

ETS 50, ETS 100: Body and AST enclosure in brass, connections in bi-metal

(stainless steel/copper).

ETS 12.5, ETS 25, ETS 250, ETS 400: Body and AST enclosure in brass, connections in copper.

Danfoss ETS 50-100-034G0508 electric expansion valve data

Motor enclosure IP67

Stepper motor type Bi-polar - permanent magnet.

Step mode 2 phase full step.

Phase resistance 52 Ω ±10%

Phase inductance 85 mH

Step angle

7.5° (motor),

0.9° (lead screw),

Gearing ration 8.5:1. (38/13) 2 :1

Nominal voltage

Constant voltage drive: 12 V dc -4% – 15%,

150 steps/sec.

Phase current Using chopper drive: 100 mA RMS -4% – 15%

Holding current

Constant voltage drive: Depends on application.

Chopper drive: full current allowed (100% duty cycle)

Max. total power Voltage / current drive: 5.5 / 1.3 W (UL: NEC class 2)

Step rate

Constant voltage drive: 150 steps/sec.

Chopper current drive: 0 – 300 steps/sec. 300 recommended

Total steps

ETS 12.5, ETS 25, ETS 50: 2625 [160 / -0] steps

ETS 100:  3530 [160 / -0] steps

ETS 250, ETS 400: 3810 [160 / -0] steps

Full travel time

ETS 12.5, ETS 25, ETS 50: 17 / 8.5 sec. (voltage / current)

ETS 100: 23 / 11.5 sec. (voltage / current)

ETS 250, ETS 400: 25.4 / 12.7 sec. (voltage / current)

Lifting height

ETS 12.5, ETS 25, ETS 50: 13 mm (0.5 in.)

ETS 100:  16 mm (0.6 in.)

ETS 250, ETS 400: 17.2 mm (0.7 in.)

Reference position Overdriving against the full close position

Electrical connection M12 connector

Compatible Danfoss controllers Danfoss EKE 1A, EKE 1B, EKE 1C, MCX061V, MCX152V and more