Key specification for this explosion proof ventilation fan: 380 V, blade material Cast Iron. Everything below is reproduced from the factory data sheet. Made by Dezhou Tianqing Environmental Protection Equipment Co., Ltd. (1 year on the platform, typical reply ≤3h). Send your target quantity and destination for a firm quotation with current lead times.
Key Features of This Explosion Proof Ventilation Fan
- Voltage: 380 V
- Blade Material: Cast Iron
- Warranty: 1 Year
- Place Of Origin: Shandong, China
- Single Gross Weight: 0.0 kg
- Mounting: Duct Fan
Technical Specifications
| Voltage | 380 V |
|---|---|
| Blade Material | Cast Iron |
| Mounting | Duct Fan |
| Warranty | 1 Year |
| After-Sales Service Provided | Video Technical Support |
| Place Of Origin | Shandong, China |
| Brand Name | Lv Yi Kang |
| Selling Units | Single item |
| Single Volume | 0 cm³ |
| Single Gross Weight | 0.0 kg |
Product Details
Product Overview
4-72 centrifugal Fan
This fan adopts a backward-curved impeller structure, where the airflow enters the fan axially, gains kinetic energy through the rotation of the impeller, and then is discharged radially. The air volume and air pressure can be flexibly adjusted by regulating the blade angle and motor speed.
Product Features Detailed Display
Copper motor
Equipped with domestic pure copper motor, with sufficient power and stable operation.
Fixed Bracket Design
The thickened and enlarged fixed bracket ensures stable operation of the fan with reduced vibration, featuring easy installation and wide applicability.
Multi-wing impeller
The impeller has undergone rigorous dynamic balance calibration, boasting excellent aerodynamic performance, high air pressure, low noise, low dust adhesion tendency, and stable operation.
Model | Motor power | Wind pressure | Air volume |
4-72-2.8A | 1.5kw-2p | 944-606 | 1111-2356 |
4-72-3.2A | 2.2kw-2p | 1300-792 | 1688-3517 |
4-72-3.6A | 3kw-2p | 1578-989 | 2664-5268 |
4-72-3.6A | 4kw-2p | 1788-1089 | 2964-5968 |
4-72-4A | 5.5kw-2p | 2014-1320 | 4012-7419 |
4-72-4.5A | 7.5kw-2p | 2554-1673 | 5712-10562 |
4-72-5A | 11kw-2p | 2987-1989 | 7268-15200 |
4-73-5A | 15kw-2p | 3187-2019 | 7728-15455 |
4-72-5.6A | 18.5kw-2p | 3589-2520 | 9788-17898 |
4-72-6A | 22kw-2p | 3150-2315 | 12753-22502 |
4-72-6C | 18.5kw-2p | 2956-1923 | 10252-20223 |
4-72-6C | 22kw-2p | 3159-2196 | 12852-22803 |
4-75-8C | 30kw-2p | 2618-1833 | 19404-33958 |
4-72-8C | 37kw-2p | 3314-2314 | 21830-38202 |
4-72-10D | 45kw-4p | 3042-2122 | 30852-55123 |
4-72-10D | 55kw-4p | 3442-2422 | 35420-61179 |
4-73-12D | 75kw-4p | 4003-2659 | 41999-47427 |
4-73-11D | 90kw-4p | 3943-2659 | 53142-80570 |
4-72-7.1A | 11kw-4p | 1572-1168 | 12676-20513 |
4-72-7.1A | 3.0kw-6p | 689-512 | 8329-13581 |
Common application scenarios include
The 4-72 centrifugal fan is a commonly used exhaust fan product. Boasting high operational efficiency, it is widely applied in industrial and mining workshop areas, civil and public construction fields, the energy and power industry, air handling and HVAC support systems, as well as environmental protection engineering supporting facilities. It is classified into two types: 4-72-A and 4-72-C.
Years of R&D, production and sales engineering experience, with quality guaranteed.
Dezhou Tianqing Environmental Protection has always adhered to sophisticated technology as its core competitiveness. We introduce advanced foreign technologies and have established a professional and experienced technical team, continuously conducting technological innovation and product modification. This provides a strong guarantee for our company to manufacture products with stable quality, reliable technology and peace of mind for customers. All colleagues of Liansheng Environmental Protection uphold the business philosophy of "Integrity, Promise-Keeping, Pragmatism and Innovation", keep forging ahead and blazing new trails. We are determined to build the company into a leader in China's sludge dewatering equipment industry. – Corporate Spirit: Integrity, Promise-Keeping, Pragmatism and Innovation – Corporate Vision: To Become a Brand Trusted by Customers – Corporate Mission: To Provide Customers with Mature, Advanced and Reliable Products and Services – Business Philosophy: To Make Every Customer Willing to Be Friends with Us Quality Assurance Buy with Confidence & Reliable After-Sales Service.
Contact Customer Service
Consult customer service for product information.
Customer Confirmation
Technicians issue drawings as required.
Customization Confirmation
Start production quickly according to the drawings.
Finished Product Display
Contact customer service for video inspection; mass production begins after confirmation.
Balance Payment
The factory initiates mass production and completes it within the agreed time.
Receipt Confirmation
Express delivery ensures door-to-door service, with after-sales support provided.
FAQ
1. What causes excessive noise during fan operation? The main causes include: impeller dust accumulation or dynamic imbalance, misalignment between the fan and motor, bearing wear or lack of lubrication, and excessively small clearance between the air inlet and impeller. Targeted solutions: clean dust off the impeller, correct the installation concentricity, replace worn bearings and add lubricating oil, and adjust the clearance between the air inlet and impeller. 2. How to resolve insufficient air volume that fails to meet operational requirements? Common causes are: excessive pipeline resistance due to clogging or excessive elbows, low motor voltage or belt slippage, reverse rotation of the impeller or damaged blades. Solutions: clear and unclog the pipeline, reduce the number of elbows, check the motor voltage and tighten the belt, confirm the impeller rotation direction and replace damaged blades. 3. Is it normal for the fan bearing temperature to be too high? No, it is not normal. The main causes are: insufficient or deteriorated bearing grease, overly tight bearing assembly, and vibration transmission from the fan to the bearing end. Actions required: timely replenish or replace suitable grease, adjust the bearing assembly clearance, and identify and eliminate the fan vibration source. 4. How to handle severe vibration during fan operation? The core causes include: heavy dust accumulation on the impeller, deformed or broken blades, loose base fixing bolts, and misalignment of the coupling. Immediate measures: shut down the fan at once, clean dust off the impeller, replace deformed or broken blades, tighten the base fixing bolts, and correct the coupling concentricity. 5. How to solve oil leakage after the fan has been in use for a period of time? It is mostly caused by aging and damage to the bearing end cover seals or overfilling of grease. Solutions: replace the seals with new ones, and add grease according to the standard dosage specified in the manual to avoid grease overflow due to overfilling. 6. Can the fan be used under both positive pressure and negative pressure working conditions? Yes. The 4-72 centrifugal fan is designed for both positive pressure air supply (e.g., hot air circulation) and negative pressure air extraction (e.g., workshop dust removal, waste gas treatment). However, it is necessary to match the pipeline resistance and motor power corresponding to the working conditions to avoid overload operation.
Ordering and Pricing
- Minimum order quantity: 1 piece
- Volume pricing:
- 1+ piece: US $408 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this explosion proof ventilation fan?
The standard minimum order quantity is 1 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 1 Year warranty. Spare parts and technical support remain available after the warranty period.
Can the explosion proof ventilation fan be supplied for my local voltage?
The standard configuration is 380 V. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Dezhou Tianqing Environmental Protection Equipment Co., Ltd., based in China. The company 1 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Dezhou Tianqing Environmental Protection Equipment Co., Ltd. range on HVACR Nexus.
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