RAFAVENT AXIAL FAN SUBFAMILY
Large-Diameter Agricultural Axial Fans
Low-pressure, high-airflow exhaust fans for poultry houses, livestock buildings, greenhouses and agricultural process spaces.
Calculated technical selection data← Back to Industrial Axial Fans
RAFAVENT RF-AGR SERIES
Agricultural & Poultry Exhaust Fans — Technical Selection Data
Wall-mounted axial exhaust fans designed for continuous air exchange at low system resistance; drive arrangement may be direct or belt-driven according to size and project duty.
RAFAVENT Engineering Calculation — Preliminary Selection — Non-Certified. Values are calculated at standard air density 1.20 kg/m³ using fan-law scaling and a low-pressure agricultural axial benchmark envelope. They are not laboratory-certified ratings. Final selection requires the actual pressure loss of shutters, guards, light traps, evaporative pads and building openings.
Construction and application
- Galvanized or coated square housing with protective inlet guard and project-selected shutter or discharge cone.
- Direct-drive or belt-driven aluminium, coated-steel or engineered-composite propeller; final blade material depends on corrosion, cleaning and duty cycle.
- Standard clean-air agricultural basis −20 to +50 °C; humidity, ammonia, dust and wash-down exposure require a project material and motor-IP review.
- Wall or framed-opening exhaust installation with sufficient make-up air; avoid recirculation and inlet blockage.
Size policy: the published standard calculated series is Ø560–Ø1000 mm. RAFAVENT has manufactured custom axial units up to Ø1700 mm, but Ø1250–Ø1700 models remain project-engineered and are not assigned standard performance values on this page.
Model selection table
Recommended airflow and pressure describe a selection envelope, not opposite corners of one guaranteed operating point. Sound is estimated free-field A-weighted sound pressure at 3 m before wall reflection, shutter, cone, guard and building effects; uncertainty ±6 dB(A).
Calculated model curves
Six-point preliminary Q–Ps curves are provided for the standard series. Do not extrapolate beyond free-air flow or shut-off pressure.
RF-AGR-560 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 86 |
| 2 | 2,731 | 82 |
| 3 | 5,463 | 67 |
| 4 | 7,647 | 47 |
| 5 | 9,286 | 26 |
| 6 | 10,925 | 0 |
RF-AGR-630 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 108 |
| 2 | 3,889 | 103 |
| 3 | 7,778 | 84 |
| 4 | 10,889 | 59 |
| 5 | 13,222 | 32 |
| 6 | 15,555 | 0 |
RF-AGR-710 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 138 |
| 2 | 5,566 | 131 |
| 3 | 11,133 | 108 |
| 4 | 15,585 | 76 |
| 5 | 18,925 | 41 |
| 6 | 22,265 | 0 |
RF-AGR-800 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 98 |
| 2 | 5,972 | 93 |
| 3 | 11,944 | 76 |
| 4 | 16,722 | 54 |
| 5 | 20,305 | 29 |
| 6 | 23,888 | 0 |
RF-AGR-900 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 124 |
| 2 | 8,503 | 118 |
| 3 | 17,006 | 97 |
| 4 | 23,808 | 68 |
| 5 | 28,910 | 37 |
| 6 | 34,012 | 0 |
RF-AGR-1000 — calculated Q–Ps curve
Airflow Q (m³/h)Static pressure Ps (Pa)
| Point | Q (m³/h) | Ps (Pa) |
|---|
| 1 | 0 | 153 |
| 2 | 11,664 | 145 |
| 3 | 23,328 | 119 |
| 4 | 32,659 | 84 |
| 5 | 39,658 | 46 |
| 6 | 46,656 | 0 |
Selection requirements
Confirm required ventilation rate, building static pressure, shutter/cone/guard losses, pad condition, corrosive exposure, voltage, controls, duty cycle, permissible sound and cleaning method before order.
Technical documents, dimensions and service
Technical documents and dimensions
Final dimensions, connection details, materials, motor data and project drawings are issued for the selected configuration after engineering review.
Installation and maintenance
Provide level support, flexible connections, guarded drive components, alignment checks and safe maintenance access. Follow the approved project-specific O&M document.
Selection tables and calculated curves on this page are preliminary engineering guidance, not certified RAFAVENT test ratings. Confirm the operating point and controlled documents before order.
