Danfoss ETS 400L Electric Expansion Valve | High Capacity & Precision | 034G3630

Product Description: The ETS 400L (034G3630) is the “Large” capacity variant in the ETS family, specifically designed for industrial chillers and large commercial HVAC units. In the UAE—where cooling systems for shopping malls, district cooling plants, and industrial processing centers operate under extreme conditions—the ETS 400L ensures peak evaporator efficiency. By using a bipolar stepper motor to precisely position the valve needle, it maintains optimal superheat even as the cooling load fluctuates throughout the intense Middle Eastern day. Its balanced orifice design provides bi-flow capability, which is essential for large heat pump systems and complex refrigeration circuits.

Key Features & Benefits:

• Extreme Precision: Features a high-resolution stepper motor that allows for very fine increments in refrigerant flow, maximizing energy efficiency.
• Massive Cooling Capacity: The “L” (Large) series is optimized for high-tonnage systems common in UAE commercial and industrial infrastructure.
• Bi-flow Performance: Provides identical flow characteristics in both directions, making it highly versatile for systems with reverse-cycle defrost or heat pump modes.
• Reliable Stepper Motor Technology: Proven bipolar motor design ensures long-term stability and repeatability in heavy-duty applications.
• Environmental Resilience: Constructed with high-grade materials to resist corrosion and handle high-pressure refrigerants like R410A, R134a, and R407C used in the UAE.

Technical Specifications:

FAQs:

• Q: What makes the ETS 400L different from the standard ETS 400?
• A: The “L” version (034G3630) features a larger orifice and connection size ($2\ 1/8$ inch), allowing for significantly higher refrigerant mass flow required by large-tonnage UAE chillers.
• Q: Can this valve be used for heat recovery systems in Abu Dhabi?
• A: Yes, its bi-flow capability and high precision make it ideal for heat recovery and complex heat pump applications.
• Q: Does it require a specific controller?
• A: To function, it must be connected to an electronic controller (like the Danfoss EKE or EKD series) that can drive a bipolar stepper motor.