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Danfoss Actuator & adjustment part, PN 25, for AVPQ4, 0.3 – 2 bar setting range, flow mounting, self-acting-controller spare
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Product Description
Danfoss actuator & adjustment part (003H6851) — genuine PN 25 spare assembly for the Danfoss self-acting controller range. It is the diaphragm actuator / setting-spring "top works" that mounts on the controller valve body: the actuator senses the controlled differential pressure through the Ø6 mm copper impulse tubes and modulates the valve cone, and the adjustment part carries the setting spring that fixes the working range. Fits Danfoss AVPQ4 controllers, flow (controller installed in the flow/supply pipe). Adjustable setting range 0.3 – 2 bar. OEM designation "Act. & adj.part PN25 0,3-2,0 AVPQ 4 flow". Net weight 4.568 kg, gross 4.596 kg. Contains lead per the REACH candidate list. OEM P/N 003H6851. EAN 5702421553084. Technical data quoted verbatim from store.danfoss.com (code 003H6851).
Technical Specifications
- Code number
- 003H6851
- Type
- Actuators and adjustment parts
- Item
- Actuator & adjustment part
- Product group
- Accessories — SAC (self-acting controllers)
- Function
- Diaphragm actuator / setting-spring assembly for self-acting controllers (top works)
- For product type
- AVPQ4
- Mounting version
- Flow (controller installed in the flow/supply pipe)
- Pressure class
- PN 25
- Pressure setting range
- 0.3 – 2 bar
- Differential-pressure setting range
- 0.3 – 2 bar
- Impulse-tube connection
- Ø6 mm copper (compression fittings)
- OEM description
- Act. & adj.part PN25 0,3-2,0 AVPQ 4 flow
- REACH Candidate List substance
- Lead (CAS no. 7439-92-1)
- Volume
- 9.455 L
- Net weight
- 4.568 kg
- Gross weight
- 4.596 kg
- EAN
- 5702421553084
- HS code
- 8481.90
- Compatible with
- AVPQ4
- Description
- Act. & adj.part PN25 0,3-2,0 AVPQ 4 flow
- Differential pressure setting [bar] [Max]
- 2 bar
- Differential pressure setting [bar] [Min]
- 0.3 bar
- Pressure setting range [bar] [Max]
- 2 bar
- Pressure setting range [bar] [Min]
- 0.3 bar
- REACH Candidate List substances
- Lead (CAS no. 7439-92-1)
Standards & Compliance
- Pressure Rating
- PN 25
- HS Code
- 8481.90
Compatibility & Fitment
Genuine Danfoss actuator/adjustment-part spare (003H6851) for the AVPQ4 self-acting controller family, flow (controller installed in the flow/supply pipe). Match the controller type, mounting version and setting range (0.3 – 2 bar) to the valve body on site before ordering — the actuator top works and the valve body are ordered separately. Connects to the controlled/impulse pressure via Ø6 mm copper impulse tubes (compression fittings). Pressure class PN 25.
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 003H6851?
- 003H6851 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 003H6851.
- What is the HS code for 003H6851?
- The customs tariff (HS) code for 003H6851 is 8481.90.
- Who manufactures 003H6851?
- 003H6851 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003H6851?
- Yes — the 003H6851 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003H6851?
- The minimum order quantity is 1.
- Is 003H6851 available?
- Yes — 003H6851 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).