Danfoss AVTB Self-Acting Temperature Controller DN 15 20–60 °C NPT 1/2
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Product Description
Danfoss AVTB self-acting thermostatic temperature controller, OEM P/N 003N6252. A proportional, self-acting (no external power) valve that throttles the flow to hold a set medium temperature: the liquid-charged sensor closes the valve on rising temperature. Valve size DN 15. Kvs 1.9 m³/h. Temperature setting range 20 °C – 60 °C. Connection NPT 1/2. PN 16. Body Brass CuZn40Pb2 W. no 2.0402. OEM designation "AVTB 15 Thermostatic valve 20-60 °C". OEM P/N 003N6252. EAN 5702421101346. Technical data quoted verbatim from store.danfoss.com (code 003N6252).
Technical Specifications
- Brand
- Danfoss
- Part number
- 003N6252
- Model
- AVTB (fast)
- Category
- HVAC & Refrigeration — Water Regulating Valves
- Function
- Self-acting thermostatic temperature controller
- Valve size
- DN 15
- Valve diameter
- 15 mm
- Temperature setting range
- 20 °C – 60 °C
- Kvs value
- 1.9 m³/h
- Connection size
- NPT 1/2
- Connection type
- Internal thread
- Sensor connection
- M14x1 / R1/2 ext thread acc. DIN 2999
- Temperature sensor length
- 180 mm
- Temperature sensor diameter
- 9.5 mm
- Capillary tube length
- 2 m
- Max differential pressure
- 10 bar
- Flow characteristic
- Linear
- Cone/seat sealing material
- NBR / Brass W. No 2.0402
- Valve body material
- Brass CuZn40Pb2 W. no 2.0402
- Valve seat material
- Cr Ni steel W.no 1.4301
- Temperature sensor material
- Copper mat. No 2.0090
- Approval standard
- ETA VA 1.54/18952
- Media
- District heating/cooling circulation water
- Medium temperature range
- 2 °C to 130 °C
- Body material
- Brass CuZn40Pb2 W. no 2.0402
- Approvals
- Approval standard ETA VA 1.54/18952
- REACH Candidate List substance
- Lead (CAS no. 7439-92-1)
- Volume
- 4.082 L
- Net weight
- 1.601 kg
- Gross weight
- 1.685 kg
- OEM description
- AVTB 15 Thermostatic valve 20-60 °C
- EAN
- 5702421101346
- HS code
- 8481.80
Standards & Compliance
- Size / Series
- AVTB (fast)
- Material
- Brass CuZn40Pb2 W. no 2.0402
- Pressure Rating
- PN 16; max differential pressure 10 bar
- Temperature Range
- 2 °C to 130 °C (media); setting range 20 °C–60 °C
- Classification / Approval
- Approval standard ETA VA 1.54/18952
- HS Code
- 8481.80
Compatibility & Fitment
Fit in the flow line with the sensor in the medium to be controlled; the AVTB closes on rising temperature. Match valve size (DN 15), Kvs (1.9 m³/h) and temperature setting range to the application before ordering. Self-acting — no external power or actuator required. Confirm code and range before ordering.
Product Documentation
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Technical guides
- Cross-Referencing Danfoss Refrigeration Components by IMPA and OEM Code
- Danfoss Product Code Decoder — 003Z, 013G, 017B, 023U, 027L, 032F, 060G, 060H, 065B, 065Z, 068Z, 084H, 132F, 148B Series (Complete Reference)
- Danfoss Maneurop MTZ Reciprocating Compressors — Model Range, Voltage Codes and Replacement Guide
Catalogue entry last verified: 2026-08-24. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003N6252?
- 003N6252 can be ordered from cballast.com as a Danfoss catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Danfoss product?
- The manufacturer part number is 003N6252.
- What is the HS code for 003N6252?
- The customs tariff (HS) code for 003N6252 is 8481.80.
- Who manufactures 003N6252?
- 003N6252 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003N6252?
- Yes — the 003N6252 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003N6252?
- The minimum order quantity is 1.
- Is 003N6252 available?
- Yes — 003N6252 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).