Danfoss AVQM flow controller with integrated control valve (PICV), PN 25, DN 50, flow range 0.8–14 m³/h, Kvs 25 m³/h, Flange DN 50
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Product Description
Danfoss AVQM (003H6758) — self-acting flow controller with integrated control valve, PN 25, DN 50, for district heating and cooling systems. The AVQM holds the flow rate constant and limits it to the set maximum; the integrated control valve accepts a Danfoss AMV(E) electric actuator for combined flow and temperature control. It comprises a control valve with adjustable flow limiter, a connection neck for the electric actuator and a pressure actuator with one control diaphragm. Flow range 0.8–14 m³/h; flow-restrictor differential pressure 0.2 bar; Kvs 25 m³/h. Maximum differential-pressure range 16 bar; media temperature 2–150 °C; cavitation factor z ≥ 0.6; seat leakage 0.05 % Kvs (IEC 60534). Valve body Ductile iron EN-GJS-400-18-LT (GGG 40.3); valve cone Dezincing free brass CuZn36Pb2As; seat Stainless steel, mat. 1.4571; control diaphragm EPDM. Connection Flange DN 50 (EN 1092-2). Mounting version Free. Permissible media: District heating/cooling circulation water (Glycolic water up to 30%), pH 7–10. OEM P/N 003H6758. Technical data quoted verbatim from store.danfoss.com (code 003H6758) and the Danfoss AVQM (PN 25) data sheet. 1.4571; control diaphragm EPDM; Pressure rating: PN 25 (max. differential-pressure range 16 bar); Temperature range: 2 to 150 °C (district heating/cooling water); HS code: 8481.80. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants.
Technical Specifications
- Code number
- 003H6758
- Type
- AVQM
- Product group
- Pressure and flow controllers
- Function
- Self-acting flow controller with integrated control valve (limits max. flow; accepts AMV(E) actuator)
- Valve size
- DN 50
- Pressure class
- PN 25
- Connection
- Flange DN 50 (EN 1092-2)
- Kvs value
- 25 m³/h
- Flow rate range
- 0.8 - 14 m³/h
- Flow restrictor differential pressure (Δpb)
- 0.2 bar
- Max. differential pressure range
- 16 bar
- Media temperature
- 2 - 150 °C
- Media pH
- 7 - 10
- Cavitation factor z
- ≥ 0.6
- Seat leakage rate
- 0.05 % Kvs (IEC 60534)
- Mounting version
- Free
- Stem position
- Normally open
- Stroke
- 10 mm
- Permissible media
- District heating/cooling circulation water (Glycolic water up to 30%)
- Valve body material
- Ductile iron EN-GJS-400-18-LT (GGG 40.3)
- Valve cone material
- Dezincing free brass CuZn36Pb2As
- Valve seat material
- Stainless steel, mat. No. 1.4571
- Actuator diaphragm
- EPDM
- EU RoHS compliance
- Yes with exemptions (6(c))
- REACH Candidate List substance
- Lead (CAS no. 7439-92-1)
- China RoHS
- Out of scope
- Net weight
- 13.82 kg
- Gross weight
- 14.123 kg
- EAN
- 5702421542798
Standards & Compliance
- Material
- Valve body Ductile iron EN-GJS-400-18-LT (GGG 40.3); valve cone Dezincing free brass CuZn36Pb2As; valve seat Stainless steel, mat. No. 1.4571; control diaphragm EPDM
- Pressure Rating
- PN 25 (max. differential-pressure range 16 bar)
- Temperature Range
- 2 to 150 °C (district heating/cooling water)
- HS Code
- 8481.80
Compatibility & Fitment
Danfoss AVQM for DN 50 district-heating/cooling flow (PICV) control at PN 25. Set the maximum flow within 0.8–14 m³/h using the adjustable flow restrictor (Kvs 25 m³/h). The integrated control valve accepts a Danfoss AMV(E) actuator for combined flow/temperature control (ordered separately). Confirm the connection (Flange DN 50 (EN 1092-2)) and pressure class (PN 25) match the pipework; order the matching counter-flange/gasket set separately. Maximum differential-pressure range 16 bar, media temperature up to 150 °C.
Product Documentation
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Technical guides
- Flange Finder — EN 1092-1 PN6 to PN40 and ASME B16.5 Class 150/300 by DN, Pressure Rating and Type (Weld Neck, Slip-On, Blind, Plate)
- 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)
Catalogue entry last verified: 2026-08-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003H6758?
- 003H6758 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 003H6758.
- What is the HS code for 003H6758?
- The customs tariff (HS) code for 003H6758 is 8481.80.
- Who manufactures 003H6758?
- 003H6758 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003H6758?
- Yes — the 003H6758 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003H6758?
- The minimum order quantity is 1.
- Is 003H6758 available?
- Yes — 003H6758 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).