Customer Requirement
One of LONGWELL customers needed one thing: 51,000 m³/h at 80 Pa static pressure. They are asking for a standard large-format ventilation fan used for poultry and livestock barns. The customer requires these ventilation fans for managing indoor temperature, controling humidity, and exhausting harmful air. The unit needed to operate on a 380V, 50Hz three-phase power supply. The 1380 × 1380 mm square frame meant it dropped straight into pre-built wall openings.
Engineering Solution
The request landed on an existing model, the LWPVL-1270T-01. The engineering challenge was straightforward but unforgiving: move huge volumes of air, efficiently, in a corrosive environments, without breaking. The belt-drive fan is recommended and a standard 1400 RPM AC motor drives the 1270 mm impeller through a reduction ratio that brings blade speed down to 439 RPM.
Materials followed the environment. Blades: 1.2 mm stainless steel, punch-formed. Handles ammonia and humidity without rusting or fatiguing. Housing, wind cone, frame: heavy-gauge galvanized steel at 275 g/m² zinc coating — structural strength with real corrosion protection, at a cost that makes sense in volume.
The automatic shutter system is worth highlighting. Double-door design, opens on airflow with near-zero resistance, seals with rubber gaskets when the fan stops. No backdraft, no heat loss. In multi-fan installations, that alone cuts building energy consumption by 15-20%.
Final selection: LWPVL-1270T-01 with the 1.1 kW motor. Delivers 51,000 m³/h at 80 Pa, right on spec. Off-the-shelf, no compromises.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LWPVL-1270T-01 |
| Airflow | 51,000 m³/h |
| Total Pressure | 80 Pa |
| Input Power | 1100 W (1.1 kW) |
| Voltage / Frequency | 380 V / 50 Hz |
| Blade Diameter | 1270 mm |
| Blade Speed | 439 RPM |
| Motor Speed | 1400 RPM |
| Noise Level | ≤70 dB(A) |
| Dimensions (H x W x D) | 1380 x 1380 x 1300 mm |
| Impeller Material | Stainless Steel |
| Housing Material | Galvanized Sheet (275g/m²) |
The specifications confirm a high-efficiency design, moving a large volume of air for just 1.1 kW of power. The low blade speed of 439 RPM is key to achieving this airflow with manageable noise levels for an industrial unit of this size.
Technical Documentation
The following documents were provided to the customer to confirm all performance and physical specifications.
LWPVL-1270T-01 Technical Drawing (.pdf)
This technical drawing provides engineers with precise dimensional data for installation planning and confirms key materials and performance parameters.
This product image shows the complete fan assembly, including the square mounting frame, protective grille, and central belt-drive housing.
Why Longwell for This Application
- Price-Performance for Large Deployments: Longwell matches the airflow and build quality of premium European brands at 35–38% less. Same spec, same reliability, serious savings when you’re outfitting an entire facility.
- Engineered for Critical Environments: LONGWELL conforms to our principle “Engineered for the Critical.” The choice of a durable stainless steel impeller and a robust, field-serviceable belt-drive system reflects a design philosophy focused on maximizing uptime in demanding conditions.
- Verified Performance Data: 51,000 m³/h at 80 Pa isn’t a calculated estimate. It’s independently tested to AMCA 210-16 and ISO 5801. Procurement teams and system integrators can take the number off the datasheet and put it straight into their load calculations.
- High-Volume Manufacturing Capacity: This project involved a standard, high-volume model. With an annual production capacity exceeding 30,000 cold chain units and 120,000 data center units, Longwell has the proven manufacturing scale to handle large orders for agricultural fans, ensuring predictable lead times for time-sensitive construction schedules.
Explore our full Poultry Exhaust Fans range.
Frequently Asked Questions
Q: Is the LWPVL-1270T-01 a direct drive or belt drive fan?
A: Belt drive. A standard 1400 RPM motor runs the 1270 mm impeller at 439 RPM through a reduction drive. This keeps the motor compact, affordable, and easy to replace
Q: What is the expected lead time for an order of 50 units for a poultry farm project?
A: As a standard production model, an order for 50 units can typically be manufactured and prepared for shipment within 4-6 weeks after the purchase order is confirmed. Our high-volume manufacturing lines are designed to accommodate large-scale agricultural projects with reliable scheduling.
Q: What maintenance is required for the belt-drive system and materials?
A: Check belt tension and condition every 6 months under normal operation. Clean the impeller blades and housing periodically.
Technical Documentation & Resources
Project Gallery & Technical Drawings
Have a Similar Fan Requirement?
Longwell’s engineering team delivers custom spec sheets and samples within 90 days. Since 1990, we have supplied EC fans and blowers to OEMs across HVAC, cold chain, data center, and industrial applications worldwide.
Browse Related Products:
🏆 ISO 9001 / ISO 14001 / ISO 45001 | CE (TÜV) | UL/ETL | ATEX Zone 21/22 | AMCA 210-16 / ISO 5801 tested
Project Item: 7054269901-LWPVL‑1270T‑01 标准报价
Project Date: 2026-07-21 03:55:23
