1. What is fiberglass negative air pressure ventilation fan?
Fiberglass negative air pressure ventilation fan is a new type of ventilation equipment outer frame made of anti-corrosion FRP material. it is mainly used as trench fan and side fan, which can effectively remove the dirty gas such as NH3, H2S and humid air in the dung ditch and the breeding house, and eliminate the sultry heat, smoke, exhaust gas, dust, etc. in the widely used in animal husbandry, factory, etc. Product material: Fiberglass negative air pressure ventilation fan shell is 10mm thickness. It will be very stability and durability. And Marshine exhaust fan border thickness 18mm for comparably higher durability and strength installation. Fan impeller adopts frp SMC impeller, bending strength is not less than 196 Mpa, each part adopts smooth excessive, smooth appearance, no cracks, gaps, burrs and other defects, the overall effect is good, the fan has reasonable aerodynamics, large air volume, low noise, high efficiency, corrosion resistance.
2. What are fiberglass negative air pressure ventilation fan included component?
FRP negative pressure fan can exchange air through negative pressure, which can achieve the purpose of air circulation, ventilation and cooling, so it is also called FRP negative pressure fan. 1. The appearance is made of fluid, waterproof, rainproof, large air volume and low noise. It is produced with good raw materials, with good impact resistance, high corrosion resistance, smooth surface and interior, and continuous service life of more than 20 years.
2. The shell is made of SMC molding, which is integrated, without microspores on the surface, clean and beautiful, easy to clean and save cost. Its biggest characteristic is corrosion resistance and acid and alkali resistance. 
3. The fan blade is molded with SMC FRP and assembled with 6 blades. It has been installed, anti-corrosion, acid and alkali resistance, quiet and stable operation Ensure large air volume, no deformation, no fracture 
4. The shutter does not need to use power and personnel switch. Its principle is the downstream principle of air. The shutter can be opened and closed automatically to achieve dustproof, waterproof and elegant appearance. This shutter is light weight and exhibits antioxidant properties. 
5. Pure copper wire motor adopts the national standard pure copper motor, fast speed, large power, has loss power protection device, protection class IP55, insulation class F 
6. Imported Bearing has the characteristic of good speed, low noise, durable, high-strength not easy to rust High hardness, not easy to wear. 
3. What are size introduction of negative air pressure ventilation fan?
| Item No. | Dimensions(mm) | Power(W) | Air Flow | Voltage/Frequency | Noise | Rotation Speed | Net Weight |
| 560# | 560x560x440mm(22”x22”x17”) | 250W (3p) | 10000 m³/h 5900CFM | 380V/50Hz (customizable) | ≤45db | 950rpm | 35kg |
| 680# | 680x680x450mm(26"x26"x18”) | 250W (5p) | 12000 m³/h 7200CFM | 380V/50Hz (customizable) | ≤45db | 820rpm | 40kg |
| 850# | 850x850x480mm(33"x33"x19”) | 370W (8P) | 17000m³/h 10000CFM | 380V/50Hz (customizable) | ≤53db | 620rpm | 45kg |
| 1060# | 1060x1060x550mm(42"x42"x22”) | 550W (10P) | 28000m³/h 16600CFM | 380V/50Hz (customizable) | ≤55db | 560rpm | 50kg |
| 1260# | 1260x1260x560mm(50"x50"x22”) | 750W (10P) | 37000m³/h 22000CFM | 380V/50Hz (customizable) | ≤65db | 520rpm | 65kg |
| 1460# | 1460x1460x580mm(57"x57"x23”) | 1.1KW(10P) | 45000m³/h 26500CFM | 380V/50Hz (customizable) | ≤65db | 450rpm | 75kg |
4. What is the convention theory of fiberglass negative air pressure ventilation fan? Exhausting a great of air indoor to create an air pressure difference and force outside air flow into the room.
1. The fiberglass negative air pressure ventilation fan has the characteristics of low investment cost, large air volume, low noise, low energy consumption, stable operation, long service life, and high efficiency. It can be blown or extracted, which is the choice of cooling and ventilation in modern workshops. Energy-saving negative pressure fan will become the mainstream of the ventilation and cooling equipment market. 2. Marshine Fiberglass Negative Air Pressure Ventilation Fan is a typical ventilation and cooling equipment, most manufacturers will choose the negative pressure fan because it can not only effectively remove workshop and farm odor, high heat, smoke, etc., but also lies in its energy saving, environmental protection and high quality 3. Marshine fiberglass negative air pressure ventilation fan is optimized according to the principle of hydrodynamics. The exhaust air is 46000-48000 cubic meters per hour. One fan can ensure that the workshop of 800 cubic meters can exchange air once per minute. The matched power is only 0.75 kW, which is very energy-saving and power-saving. 4. Fiberglass negative air pressure ventilation fan can be used in almost all places requiring cooling or ventilation, with long service life, stable operation and low noise.
5. How do the fiberglass negative air pressure ventilation fan works for farm air ventilation?
1. Ventilation and cooling: as the sun shines on buildings, machinery and equipment, human body and other heat sources, the temperature in places requiring ventilation is higher than that outdoors. The FRP negative pressure fan is used to quickly discharge the indoor hot gas, so that the indoor temperature is equal to the external temperature, so as not to increase the temperature in the workshop. 2. The air flow takes away the heat of the human body. The air flow accelerates the evaporation of sweat and absorbs the heat of the human body, so as to make the human body feel cool, as cool as the natural wind. FRP negative pressure fan only has the function of ventilation and cooling, and has no function of refrigeration. Cooling is the feeling of human body. 3. Marshine Fiberglass negative air pressure ventilation fan material designed to withstand the most severe production environments, corrosive environments contain gas and compounds such as: Ammonia Hydrochloric acid ,Chlorine ,Nitrogen oxide, Hydrogen sulfide. These compounds do not damage fiberglass fans. 4. Marshine fiberglass negative air pressure ventilation fan are tested & balanced to ensure reliability. Motor and blade match to deliver consistent, dependable air flow with a wide range of static pressure ratings.
