Engineering boundary: dimensional envelopes below describe RAFAVENT manufacturing capability, not a certified performance range. Every custom duty requires a released selection, drawing and evidence status for the exact configuration.
Engineering solution paths
Compact utility fans
Space-efficient direct- or belt-drive arrangements for general service ventilation and equipment areas.
Custom axial and centrifugal fans
Project-designed diameter, casing, wheel, material and drive arrangements for non-standard duties.
OEM and packaged assemblies
Fan, motor, base, guard, silencer, control or plenum coordination within an agreed supply boundary.
Preliminary manufacturing capability
| Series | Configuration | Size / diameter envelope | Drive | Typical scope |
|---|---|---|---|---|
| RF-UF-CMP | Compact utility centrifugal | 200–710 mm | Direct or belt drive | Equipment rooms, service ventilation and constrained spaces |
| RF-UF-CUS | Custom centrifugal | Up to 1,600 mm project envelope | Direct, belt or coupling | Industrial process, material-compatible and high-pressure duties |
| RF-UF-AX | Custom axial | Standard industrial to 1,000 mm; project-built up to 1,700 mm | Direct or project drive | Large-volume process, ventilation and special installation |
| RF-UF-MOD | OEM / packaged module | Project-specific | Integrated module | Machine, skid, plenum or customer-specific assembly |
Required project definition
| Required field | Engineering input |
|---|---|
| Duty point | Airflow, static/total pressure, density, altitude and system resistance |
| Operating range | Minimum, design and maximum duty; continuous/intermittent/emergency schedule |
| Air medium | Temperature, humidity, dust, particles, corrosive or hazardous constituents |
| Space and interfaces | Maximum envelope, inlet/outlet geometry, orientation, base and service access |
| Drive and electrical | Direct/belt/coupling, motor power/speed, supply, VFD and control philosophy |
| Acoustics and vibration | Sound target at stated distance, vibration limit, isolation and flexible connections |
| Materials and finish | Wheel, casing, shaft, coating, corrosion category and wear protection |
| Compliance evidence | Required tests, certificates, inspection, FAT, drawings and document language |
Engineering checks and release documents
| Stage | Mandatory check | Released output |
|---|---|---|
| Aerodynamic selection | Duty point, operating range, density correction and system effect | Selection sheet and performance curve |
| Mechanical design | Wheel stress, shaft, bearings, critical speed, guards and base | GA drawing, rotor/drive definition and BOM |
| Power and drive | Absorbed power across range, service factor, belt/coupling and VFD | Motor/drive schedule and electrical data |
| Noise and vibration | Sound basis, balancing grade, isolation and resonance separation | Acoustic/vibration statement and test requirement |
| Environment | Temperature, corrosion, dust, wear, hazardous or smoke duty | Materials/coating schedule and claim boundary |
| Quality release | Inspection points, balance, run test, FAT and document revision | Approved submittal, ITP/FAT record and data book |
Custom engineering workflow
- Receive the duty point, layout, environment and document requirements.
- Select the closest proven RAFAVENT base fan and identify the required modifications.
- Complete aerodynamic, mechanical, drive, acoustic and environmental checks.
- Issue the technical proposal and controlled drawing for review.
- Manufacture and release only to the approved revision and agreed test plan.