Danfoss WVFX 25 pressure-operated water regulating valve, OEM P/N 003N4410. Modulates cooling-water flow to a water-cooled condenser to hold the condensing pressure constant, and shuts the water off when the plant stops. The valve is opened by the condensing (refrigerant) pressure acting on a bellows and is closed by an adjustable spring; the setting is read on a 1–5 scale. High-pressure refrigerant version (refrigerant-side MWP 45.2 bar). Water connection G 1 in (ISO 228-1); refrigerant sensing connection 1/4 in / 6 mm SAE flare. Control pressure range 15 – 29 bar (232 – 421 psig); Kv 5.5 m³/h. Body brass. Max working pressure 16 bar (232 psig) water side; 45.2 bar (655 psig) refrigerant side. Media: Fresh water, neutral brine. Verify the setting range and refrigerant against the datasheet before ordering.
| Brand | Danfoss |
| Part number | 003N4410 |
| Model | WVFX 25 pressure-operated water regulating valve |
| Category | HVAC & Refrigeration — Water Regulating Valves |
| Version | high-pressure refrigerant version (refrigerant-side MWP 45.2 bar) |
| Function | opens on rising condensing (refrigerant) pressure; proportional (self-acting) regulation of condensing pressure by throttling the condenser cooling water |
| Nominal size | WVFX 25 (DN 25) |
| Water-side connection | G 1 in, ISO 228-1 (inlet and outlet) |
| Refrigerant sensing connection | 1/4 in / 6 mm SAE flare |
| Control pressure range | 15 – 29 bar (232 – 421 psig) |
| Kv | 5.5 m³/h (Cv 6.4 gal/min) |
| Max working pressure (MWP) | 16 bar (232 psig) water side; 45.2 bar (655 psig) refrigerant side |
| Media temperature range | -25 °C to 130 °C (-13 °F to 266 °F) |
| Body material | brass |
| Media | Fresh water, neutral brine |
| Packing | Multi pack (10 pc) |
| EAN | 5702428288248 |
| Materials | Valve housing hot-pressed brass; regulating seat and bellows stainless steel; adjustment spring steel |
| Approvals | UL Listed (C UL US), EAC, PED, EU RoHS, China RoHS |
| Refrigerants (sensing side) | R32, R410A, R452B, R454B and the standard HFC/HFO set (R134a, R404A, R407C, R448A, R449A, R507A, R513A, etc.) — see datasheet for the full approved list |
| Material | Valve housing hot-pressed brass; regulating seat and bellows stainless steel; adjustment spring steel |
| Pressure rating | 16 bar (232 psig) water side; 45.2 bar (655 psig) refrigerant side max working pressure |
| Temperature range | -25 °C to 130 °C |
| Standard size | WVFX 25 |
| Thread standard | ISO 228-1 |
| MOQ | 1 |
Fit in the cooling-water line to the condenser with the flow arrow in the direction of flow; the refrigerant sensing flare connects to the condenser/receiver. Set the closing pressure on the 1–5 scale to the required condensing pressure. Direct-acting (opens on rising pressure). Confirm code, water connection and setting range before ordering.