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Datasheet generated 2026-10-08
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Danfoss WVFX 15 Water Regulating Valve Stainless Steel G 1/2 in 3.5 – 16

Danfoss · HVAC & Refrigeration · Water Regulating Valves · Denmark · danfoss.com
Part Number
003N2101  ·  HS 8481.80
Danfoss WVFX 15 Water Regulating Valve Stainless Steel G 1/2 in 3.5 – 16

Danfoss WVFX 15 pressure-operated water regulating valve, OEM P/N 003N2101. 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. Maritime (stainless steel) version. Water connection G 1/2 in (ISO 228-1); refrigerant sensing connection 1/4 in / 6 mm SAE flare. Control pressure range 3.5 – 16 bar (51 – 232 psig); Kv 1.9 m³/h. Body stainless steel. Max working pressure 16 bar (232 psig). Media: Fresh water, neutral brine, sea water. Verify the setting range and refrigerant against the datasheet before ordering.

Technical Specifications

BrandDanfoss
Part number003N2101
ModelWVFX 15 pressure-operated water regulating valve
CategoryHVAC & Refrigeration — Water Regulating Valves
Versionmaritime (stainless steel) version
Functionopens on rising condensing (refrigerant) pressure; proportional (self-acting) regulation of condensing pressure by throttling the condenser cooling water
Nominal sizeWVFX 15 (DN 15)
Water-side connectionG 1/2 in, ISO 228-1 (inlet and outlet)
Refrigerant sensing connection1/4 in / 6 mm SAE flare
Control pressure range3.5 – 16 bar (51 – 232 psig)
Kv1.9 m³/h (Cv 2.2 gal/min)
Max working pressure (MWP)16 bar (232 psig)
Media temperature range-25 °C to 130 °C (-13 °F to 266 °F)
Body materialstainless steel
MediaFresh water, neutral brine, sea water
PackingSingle pack
EAN5702423203239
MaterialsValve housing stainless steel; regulating seat and bellows stainless steel; adjustment spring stainless steel
ApprovalsUL Listed (C UL US), EAC, PED, EU RoHS, China RoHS
Refrigerants (sensing side)R1234yf, R134a, R22, R404A, R407A/C/F/H, R422B/D, R448A, R449A/B, R450A, R452A, R454A/C, R455A, R507A, R513A, R515B, R516A — see datasheet for the full approved list

Properties

MaterialValve housing stainless steel; regulating seat and bellows stainless steel; adjustment spring stainless steel
Pressure rating16 bar (232 psig) max working pressure
Temperature range-25 °C to 130 °C
Standard sizeWVFX 15
Thread standardISO 228-1
MOQ1

Compatibility

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.

Standards

Approvals

Attached Documents