Danfoss 003N4411 Water Valve

The Danfoss 003N4411 is a high-performance WVFX 25 pressure operated water valve engineered for precise condensing pressure regulation in water-cooled refrigeration systems. This 1-inch NPT pressure-controlled water regulating valve features a robust brass body and a 2000mm (78 3/4 inch) capillary tube with a 1/4 inch SAE flare union nut, ensuring flexible and reliable sensing line connection. Designed to open on rising condensing pressure, the Danfoss WVFX 25 provides modulating flow control, which optimizes efficiency and prevents excessive water consumption during operation. It is fully compatible with modern refrigerants, including flammable options, and features double-sealing bellows to prevent cross-contamination between the refrigerant and water lines.

• Self-Acting Operation: Modulates flow without an external power supply, simplifying field installation and wiring.
• High Flow Capacity: Delivers a Kv value of 5.5 m³/h (6.4 Cv), making it ideal for mid-sized commercial refrigeration plants.
• Wide Range Control: Supports a control pressure range of 4 to 26 bar (58 to 377 psig) to match specific system requirements.
• Debris Tolerance: The internal design is engineered to be insensitive to dirt, reducing maintenance calls for fouled valves.
• Automatic Shut-off: Instantly halts water flow when the compressor stops, preventing waste and water-hammer issues.

Is the Danfoss 003N4411 suitable for low-pressure systems?
This specific model is optimized for high-pressure applications with a 4 to 26 bar range. For lower pressure requirements, verify your operating parameters against the WVFX series specifications to ensure proper modulation.

What media can be used with this valve?
The brass construction is rated specifically for fresh water and neutral brine. Contact our technical team for applications involving aggressive media or sea water, which may require stainless steel variants.

Can I use this valve with R410A or R290?
Yes, the Danfoss 003N4411 is designed to handle high-pressure refrigerants and is officially rated for use with flammable refrigerants (EX Category 3, Zone 2).

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.