Danfoss AFP 2 PN 40 — a self-acting differential-pressure controller. It keeps the differential pressure across the controlled section constant by modulating the matching globe valve body via its rolling-diaphragm actuator, using the pressure signal fed to the actuator chambers. 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 80 cm²; setting 1–3 bar; suits valve bodies DN 65–125. Media temperature 2 °C to 150 °C; maximum operating pressure 40 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 "AFP 2, PN 40, 1 bar - 3 bar, 80 cm²". OEM P/N 003G5615. Technical data quoted verbatim from store.danfoss.com (code 003G5615). 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced); Standard size: AFP 2; Pressure rating: PN 40; 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.
| Code number | 003G5615 |
| Type | AFP 2 |
| Product group | Actuators - Pressure Flow |
| Gross weight | 11.3 Kilogram |
| Net weight | 11.285 Kilogram |
| Volume | 51.33 Liter |
| Actuator diaphragm material | EPDM (Rolling, fibre enforced) |
| Actuator size [cm²] | 80 cm² |
| Body material | Steel, mat. No. 1.0345, zinc plated |
| China RoHS compliance | Out of scope |
| Contains batteries | No |
| Description | Differential pressure actuator |
| Diameter [mm] [Max] | 125 mm |
| Diameter [mm] [Min] | 65 mm |
| Differential pressure setting [bar] [Max] | 3 bar |
| Differential pressure setting [bar] [Min] | 1 bar |
| EU RoHS compliance | Out of scope |
| Flow control | No |
| Flow limitation | No |
| Function | Diff. press. 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] | 40 bar |
| Permissible media | District heating/cooling circulation water |
| Pressure class | PN 40 |
| Pressure controller | Differential pressure controller |
| Pressure nominal [bar] | 40 bar |
| Setting Type | Adjustable |
| EAN | 5710104523125 |
| HS code | 8481.90 |
| Nominal diameter | DN65 |
| Material | Actuator housing Steel, mat. No. 1.0345, zinc plated; diaphragm EPDM (Rolling, fibre enforced) |
| Pressure rating | PN 40 |
| Temperature range | 2 °C to 150 °C |
| Standard size | AFP 2 |
| MOQ | 1 |
AFP 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 40), required setting range (1–3 bar), actuator size (80 cm²) and the valve-body size range (DN 65–125). AFP(B) is the alternative-connection actuator variant of the same function; for pressure reduction use AFD; for pressure relief use AFA; for differential-pressure relief use AFPA. Confirm actuator size, setting range and matching valve body against the AF-range data sheet before ordering.