Danfoss AHQM Combined Automatic Flow Limiter & Differential-Pressure Controller (PICV) DN 65, PN 16
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Product Description
Danfoss AHQM (balancing valves), OEM order code 003L3604. Self-acting combined automatic flow limiter and differential-pressure controller (pressure-independent control valve) for hydronic balancing of heating and cooling circuits. Manufacturer description: AHQM PN16 65/50/0,3 flange flow/ret. connection/size DN 65, Kvs 50 m³/h, PN 16; max. differential pressure 4 bar, media/setting temperature 2 °C to 120 °C, body material Grey cast iron EN-GJL-250 (GG-25). EAN 5710104028767. HS 8481.80. Specifications quoted verbatim from store.danfoss.com (code 003L3604).
Technical Specifications
- Brand
- Danfoss
- Part number
- 003L3604
- Code number
- 003L3604
- Type
- AHQM
- Product group
- Pressure flow controllers
- Description
- AHQM PN16 65/50/0,3 flange flow/ret
- Gross weight
- 36 Kilogram
- Net weight
- 36 Kilogram
- Actuator diaphragm material
- EPDM
- Application
- District Heating
- Cavitation factor
- 0.6
- Connection types
- Flange
- Diameter [mm]
- 65 mm
- Differential pressure range [bar] [Max]
- 4 bar
- Flow control
- Yes
- Flow limitation
- Yes
- Flow rate [m³/h]
- 20 m³/h
- Flow rate [m³/h] [Max]
- 20 m³/h
- Flow rate [m³/h] [Min]
- 4 m³/h
- Flow restrictor diff.pressure - dpb [bar]
- 0.3 bar
- Function
- Flow controller with int. control valve
- Function VSP - P
- No
- Function VSP - Q
- No
- Function VSP - T
- No
- Kvs values [m³/h]
- 50 m³/h
- Leakage rate [% Kvs]
- 0.05
- Media pH [Max]
- 10
- Media pH [Min]
- 7
- Media temperature [°C] [Max]
- 120 °C
- Media temperature [°C] [Min]
- 2 °C
- Medium alternative
- Glycolic water up to 30%
- Mounting version
- Free
- Number of ports
- 2
- Permissible media
- District heating/cooling circulation water
- PN alternative VSP
- 10
- Pressure class
- PN 16
- Pressure controller
- No
- Pressure nominal [bar]
- 16 bar
- Sealing CV material
- Metal
- Sealing DP material
- EPDM
- Setting Type
- None
- Stem position
- Normally open
- Stroke [mm]
- 15 mm
- Valve body material
- Grey cast iron EN-GJL-250 (GG-25)
- Valve cone CV material
- DZR CW602N (CuZn36Pb2As)
- Valve cone DP material
- Stainless steel, mat. No. 1.4305
- Valve seat material
- Stainless steel, mat. No. 1.4305
- Valve size
- DN 65
- EAN
- 5710104028767
- HS code
- 8481.80 (taps, cocks, valves for pipes)
Standards & Compliance
- Size / Series
- DN 65
- Material
- Grey cast iron EN-GJL-250 (GG-25)
- Pressure Rating
- PN 16; max. differential pressure 4 bar
- Temperature Range
- 2 °C to 120 °C
- HS Code
- 8481.80
Compatibility & Fitment
Genuine Danfoss part, order code 003L3604 (Pressure flow controllers). Confirm the code, size (DN 65) and matching valve/actuator family against your Danfoss datasheet 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 003L3604?
- 003L3604 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 003L3604.
- What is the HS code for 003L3604?
- The customs tariff (HS) code for 003L3604 is 8481.80.
- Who manufactures 003L3604?
- 003L3604 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003L3604?
- Yes — the 003L3604 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003L3604?
- The minimum order quantity is 1.
- Is 003L3604 available?
- Yes — 003L3604 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).