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Datasheet generated 2026-10-08
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Danfoss Thermostatic Element for AVTA / AVTB — Universal Charge 0–30 °C, 5 m Capillary — Spare Part

Danfoss · HVAC & Refrigeration · Water Regulating Valves · Denmark · danfoss.com
Part Number
003N0077  ·  HS 8481.90
Danfoss Thermostatic Element for AVTA / AVTB — Universal Charge 0–30 °C, 5 m Capillary — Spare Part

Danfoss thermostatic element, genuine OEM spare code 003N0077, for AVTA / AVTB (and FJVA / FJV) self-acting temperature-regulating valves. Hermetically sealed universal-charge unit comprising sensor, capillary and bellows; it converts a rising medium temperature into the force that opens the valve — no external power needed. Regulating range 0–30 °C (AVTA / FJVA). Sensor 18 x 210 mm, capillary 5000 mm, max. sensor temperature 57 °C. Replaces a worn or wrongly-ranged element without changing the valve body. EAN 5702423006878.

Technical Specifications

BrandDanfoss
Part number003N0077
TypeThermostatic element — spare part for AVTA / AVTB (and FJVA / FJV) self-acting valves
CategoryHVAC & Refrigeration — Water Regulating Valves
FunctionHermetically sealed sensor + bellows charge unit; drives the valve on rising temperature
Charge typeUniversal
Regulating range (AVTA / FJVA)0–30 °C
Sensor18 x 210 mm
Capillary tube length5000 mm
Max. sensor temperature57 °C
Net weight0.113 kg
EAN5702423006878
ComplianceChina RoHS; EU RoHS out of scope
HS code8481.90 (parts of taps, cocks, valves)
Compatible withAVTA / AVTB — Universal Charge 0–30 °C
Product groupWater valves spare parts
Cap. tube length fraction [in]196 3/4 in
Capillary tube length [mm]5000 mm
China RoHS complianceYes
EU RoHS complianceOut of scope
Max. sensor temperature [°C]57 °C
Max. sensor temperature [°F]134.6 °F
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Sensor size (Ø x L) [in]23/32 x 8 1/4 in
Sensor size (Ø x L) [mm]18 x 210 mm
Temp. range AVTA/FJVA [°C] [max]30 °C
Temp. range AVTA/FJVA [°C] [min]0 °C
Temp. range AVTA/FJVA [°F] [max]86 °F
Temp. range AVTA/FJVA [°F] [min]32 °F
Temp. range AVTB/FJV [°C] [max]30 °C
Temp. range AVTB/FJV [°C] [min]0 °C
Temp. range AVTB/FJV [°F] [max]86 °F
Temp. range AVTB/FJV [°F] [min]32 °F
Type designationThermostatic element
Used for productAVTA

Properties

MaterialCopper / brass sensor, steel bellows
Pressure ratingMax. sensor pressure 25 bar (365 psi)
Temperature rangeRegulating range 0–30 °C; max. sensor 57 °C
Standard sizeAVTA, AVTB
MOQ1

Compatibility

Fits AVTA and AVTB (also FJVA / FJV) valve bodies. Match the charge type (Universal) and regulating range (0–30 °C) to the original element; Mass-charge elements require the sensor to sit above the valve.

Attached Documents