034G0508 Danfoss ETS100 Electric Expansion Valve 1-3/8"

034G0508 Danfoss ETS100 Electric Expansion Valve 1-3/8"

1.Overview of the 034G0508 Danfoss ETS100

The Danfoss 034G0508 is a bidirectional, solenoid-sealed, 1-3/8" electronic expansion valve. It offers 600 kW of cooling capacity with one-touch precision adjustment, enabling "zero superheat, zero waste" operation in chillers, heat pumps, and data center cooling systems. This imported brass, welded-through electronic expansion valve, part of the Danfoss ETS series, is widely used in refrigeration and air conditioning systems to precisely control the flow of refrigerant injected into the evaporator.

Precise flow control: The valve piston and linear positioning design provide superior control of refrigerant injection volume.

Bidirectional flow and shutoff: The pressure-balanced design enables bidirectional flow operation and provides the same tight shutoff characteristics as a solenoid valve in both flow directions.

Easy welding design: ETS 50 and ETS 100 The bimetallic welding interface (waterless welding) eliminates the need for wet cloth wrapping during welding, making it convenient and quick.

Low Power Consumption and Anti-Corrosion Design: The product features low energy consumption and internal and external corrosion protection.

Flexible Driver Compatibility: The ETS electronic expansion valve requires a controller that can be driven by either a 12V DC voltage (5.5W) or a 100mA RMS chopper current. In addition to the recommended Danfoss EKC 316A, EKC 312, and EKD 316 drivers, it is also compatible with electronic control solutions from Danfoss and other manufacturers.

2.Core Features:

Model: 034G0508
Series: ETS100
Capacity Range: 100-600 kW (R410A, +38°C/+4°C)
Rated Cooling Capacity: 488 kW (R410A) / 400 kW (R22) / 316 kW (R134a)
Maximum Operating Pressure: 45.5 bar
Maximum Operating Differential Pressure: 38 bar
Connection Size: 1-3/8" ODF copper tube × 1-3/8" ODF copper tube
Connection Type: Waterless brazing, no wet cloth required
Full Stroke: 6.5 mm
Steps: 500 (0.013 mm/step)
Flow Characteristics: Linear, bidirectional flow
Shutoff Leakage Rate: ≤ 0.02 mL/min (solenoid-grade seal)
Drive Motor: Bipolar stepper, 12 V DC peak
Power Consumption: Peak: 12 W, Average: < 6 W
Electrical Connections M12-8-pin, compatible with 034G7073 (2 m) or 034G7074 (8 m)
Protection rating IP67 (valve body + connector)
Media temperature -40°C to +70°C
Ambient temperature -40°C to +70°C
Certifications CE, UL, CRN, TÜV, RoHS
Weight ≈ 1.73 kg
Built-in sight glass: Yes, with humidity indicator

Typical Applications
Large air-cooled/water-cooled chillers (centrifugal/screw); Data center precision air conditioning, row-based cooling; Industrial heat pumps with dual-mode switching; Supermarket parallel chillers, CO₂ transcritical systems; Process cooling, laser equipment constant temperature units.

Supporting controllers (sold separately)
EKE1A (voltage type 0-10 V)
EKE1B (current type 4-20 mA)
EKC312, EKD316, MCX061V, MCX152V

Working Principle: The ETS valve is electronically driven by an AST stepper motor. This two-phase, bipolar stepper motor receives electrical pulses from the controller, driving the transmission mechanism, converting rotary motion into linear motion of the valve. This precisely controls the position of the piston and regulates the refrigerant flow.

Applications: This electronic expansion valve is commonly used in central air conditioning systems with Freon refrigeration systems. It is widely used in refrigeration and air conditioning systems to precisely control the refrigerant flow injected into the evaporator.

3.Product details pictures

4. Related products