Danfoss AFQ 2 PN 16 self-acting flow-limiting actuator — setting 0.5 bar, 320 cm² diaphragm, valve DN 65–250
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Product Description
Danfoss AFQ 2 PN 16 — a self-acting flow limiter (flow controller). It holds the flow through the controlled section at a constant maximum, independent of differential-pressure variation, by throttling the matching globe valve body via its rolling-diaphragm actuator. The actuator carries the diaphragm and setting spring only; it combines with a Danfoss VFG 2 / VFGS 2 / VFU 2 globe valve body (ordered separately) to form a complete self-acting controller for district heating and district cooling circuits. Actuator diaphragm area 320 cm²; setting 0.5 bar; suits valve bodies DN 65–250. Media temperature 2 °C to 150 °C; maximum operating pressure 16 bar. Actuator housing Steel, mat. 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced). Medium: district heating/cooling circulation water (glycolic water up to 30%). OEM designation "AFQ 2, PN 16, 0.5 bar, 320 cm²". OEM P/N 003G5597. Technical data quoted verbatim from store.danfoss.com (code 003G5597). 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced); Standard size: AFQ 2; Pressure rating: PN 16; Temperature range: 2 °C to 150 °C; HS code: 8481.90. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants. No.
Technical Specifications
- Code number
- 003G5597
- Type
- AFQ 2
- Product group
- Actuators - Pressure Flow
- Gross weight
- 13.685 Kilogram
- Net weight
- 13 Kilogram
- Volume
- 44.543 Liter
- Actuator diaphragm material
- EPDM (Rolling, fibre enforced)
- Actuator size [cm²]
- 320 cm²
- Application
- District heating and cooling
- Body material
- Steel, mat. No. 1.0345, zinc plated
- China RoHS compliance
- Out of scope
- Contains batteries
- No
- Diameter [mm] [Max]
- 250 mm
- Diameter [mm] [Min]
- 65 mm
- Differential pressure setting [bar]
- 0.5 bar
- EU RoHS compliance
- Out of scope
- Flow control
- Yes
- Flow limitation
- No
- Flow restrictor diff.pressure - dpb [bar]
- 0.5 bar
- Function
- Flow controller
- Media pH [Max]
- 10
- Media pH [Min]
- 7
- Media temperature [°C] [Max]
- 150 °C
- Media temperature [°C] [Min]
- 2 °C
- Medium alternative
- Glycolic water up to 30%
- Mounting version
- Free
- Operating pressure [bar] [Max]
- 16 bar
- Permissible media
- District heating/cooling circulation water
- Pressure class
- PN 16
- Pressure controller
- None
- Pressure nominal [bar]
- 16 bar
- Setting Type
- Fixed
- EAN
- 5714279086522
- HS code
- 8481.90
- Nominal diameter
- DN65
Standards & Compliance
- Size / Series
- AFQ 2
- Material
- Actuator housing Steel, mat. No. 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced)
- Pressure Rating
- PN 16
- Temperature Range
- 2 °C to 150 °C
- HS Code
- 8481.90
Compatibility & Fitment
AFQ 2 is the self-acting actuator of the Danfoss AF range; it combines with a Danfoss VFG 2 / VFGS 2 / VFU 2 globe valve body to build a complete controller. Select by pressure class (PN 16), required setting range (0.5 bar), actuator size (320 cm²) and the valve-body size range (DN 65–250). For flow limitation combined with an integrated control valve use AFQM; for differential-pressure control use AFP; for combined differential-pressure and flow control use AFPQ. Confirm actuator size, setting range and matching valve body against the AF-range data sheet 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: 2026-08-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 003G5597?
- 003G5597 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 003G5597.
- What is the HS code for 003G5597?
- The customs tariff (HS) code for 003G5597 is 8481.90.
- Who manufactures 003G5597?
- 003G5597 is a Danfoss product in the HVAC & Refrigeration range.
- Is a datasheet available for 003G5597?
- Yes — the 003G5597 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 003G5597?
- The minimum order quantity is 1.
- Is 003G5597 available?
- Yes — 003G5597 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).