034G4206 Danfoss ETS 25 Electric Expansion Valve (Angleway)

Product Overview

The 034G4206 (034G4206) is a high-precision electric expansion valve (EEV) from the Danfoss ETS 25 series, specifically designed for accurate liquid injection in air conditioning and refrigeration systems. This model features an Angleway flow configuration with 16 mm copper solder ODF connections, facilitating easy integration into various system layouts. Driven by a bipolar stepper motor, the 034G4206 offers superior flow control and resolution compared to traditional thermostatic valves, ensuring stable superheat and maximum evaporator efficiency. With its robust stainless steel housing and IP67-rated M12 electrical interface, this valve is engineered for durability and precision in both commercial and industrial cooling applications.

Technical Configuration

The 034G4206 utilizes advanced actuator technology to deliver high-performance refrigerant metering:

• Precision Stepper Motor: Features a bipolar motor that provides high-resolution flow control, allowing the system to react instantly to changes in load for optimized energy consumption.

• Angleway Design: The 90-degree flow orientation is ideal for specific piping configurations where space is limited or where an elbow-style installation is preferred.

• Sealed Construction: The valve is built with a hermetic design and high-grade copper connections to minimize leak risks and ensure compatibility with a wide range of common refrigerants.

• M12 Connectivity: Equipped with a standard 4-pin M12 male connector, providing a secure, waterproof electrical interface that is compatible with Danfoss EKD controllers and universal EEV drivers.

Technical Specifications

Technical FAQs

How many steps does the ETS 25 actuator have?

The ETS 25 series valves typically have a full stroke range of 2625 steps. It is critical that your controller is programmed with the correct total step count and step rate (typically 250 steps/sec) to ensure the valve opens and closes fully without stalling the motor.

Can this valve be used for bi-directional flow?

Yes. Like most valves in the ETS family, the 034G4206 is designed for bi-flow operation. This makes it a perfect choice for heat pump applications where the valve must regulate refrigerant flow in both cooling and heating modes.

What is the benefit of the copper connection material?

The use of high-quality copper for the solder connections ensures excellent brazing properties and compatibility with standard refrigeration piping. It allows for a reliable, leak-free joint using standard sil-fos or silver brazing alloys.

Engineering & Installation Guide

• Brazing Protection: During the installation process, the valve body must be protected from excessive heat. Wrap the valve in a cold, wet cloth while brazing the 16 mm connections. Ensure the flame is directed away from the actuator/motor housing, as internal components can be damaged if temperatures exceed 120°C.

• Mounting Orientation: The valve should ideally be mounted with the actuator pointing upwards (within 90 degrees of vertical). This prevents refrigeration oil or contaminants from pooling in the motor housing, which can affect the long-term reliability of the stepper mechanism.

• Wiring Integrity: When connecting the M12 cable, ensure the plug is hand-tightened to maintain the IP67 seal. In low-temperature environments, it is recommended to loop the cable downwards before entering the valve (drip loop) to prevent condensation from following the cable into the electrical interface.