JULI®Flexible Oval Ventilation Duct
JULI®Flexible Oval Ventilation Duct
Product Information
JULI® oval ventilation duct is made of PVC flexible fabric with polyester fiber as the base fabric and is coated with a PVC membrane on both sides. Polyester fiber can be chosen for different user requirements and environments. The PVC membrane is fire resistant with DIN4102 B1, NFPA701, EN13501, DIN75200, and antistatic properties; all are accompanied by an SGS test result.
JULI® oval ventilation duct is made with two suspension fins outside. The angle can be customized according to the customer’s requirement. There are also two suspension fins connected with carabiner hooks and steel rope inside the duct to keep the oval shape.
suspension system
Single suspension fin
Double suspension fins
Single suspension patch
Double suspension patches
Coupling system
Zipper Coupling
Velcro Coupling
Eyelet Coupling
End ring Coupling
Product Parameter
| JULI® Oval Ventilation Ducting Technical Specification | |||
| Item | Unit | Value | |
| Diameter | mm | 450-1650 | |
| Section length | m | 5, 10, 20, 30, 50, 100, 200, 300 | |
| Color | - | Yellow, Orange, Black | |
| Suspension | - | Double suspenison fins/patches | |
| Sealing face sleeve | mm | 150-400 | |
| Grommet spacing | mm | 750 | |
| Coupling | - | Zipper/Velcro/Steel ring/Eyelet | |
| Fire resistance | - | DIN4102 B1/EN13501/NFPA701/MSHA/DIN75200 | |
| Antistatic | Ω | ≤3 x 108 | |
| Packing | - | Pallet | |
| Diameter(mm) | Dimension(mm) |  |
|
| A | B | ||
| 450 | 650 | 350 | |
| 600 | 850 | 450 | |
| 750 | 1100 | 550 | |
| 800 | 1150 | 600 | |
| 900 | 1300 | 700 | |
| 1000 | 1400 | 750 | |
| 1050 | 1500 | 800 | |
| 1200 | 1700 | 900 | |
| 1350 | 1950 | 1050 | |
| 1500 | 2150 | 1150 | |
| 1650 | 2300 | 1200 | |
| The above values are average for reference, allowing 10% tolerance. Customization is acceptable for all given values. | |||
Product Feature
◈ Used for low headroom or small mine tunnels with a limited height.
◈ Increased airflow by maximizing duct space.
◈ Welding inside suspension fins reduce air leakage rates.
◈ Polyester woven or knit fabric with a PVC coating on both sides.
◈ The flame resistance meets DIN4102 B1/EN13501/NFPA701/MSHA/DIN75200 standards.
◈ Diameters ranging from 450 to 1650mm, other dimensions are amenable to customization.
Product Advantage
Over 15 years of experience in the production of PVC flexible air ventilation ducts and fabric, a strong scientific research team, over ten engineering and technical staff with professional college degrees, over 30 high-speed rapier looms, three composite production lines with an annual output of more than 10,000 tons of calendered membranes, and three automatic ducting welding production lines with an annual output of more than 15 million square meters of fabric, provide long-term support and services for fans' company and large projects at home and abroad.
The eyelets are automatically buckled by the automatic machine to prevent them from falling off.
Automatic suspension fin/patch, fabric joining, duct body welding, the welding seam is even and stable, decreasing the influence of human factors on welding stability. The welding efficiency is 2-3 times that of a traditional welding machine, and the lead time is reduced.
The oval ventilation duct's basic connections are zipper and Velcro. The extra fabric on which the zipper/Velcro is sewed is welded to the flexible duct body to ensure that there are no sewing needle eyes throughout the ducting, reducing air leakage. The long sealing face sleeve covers the zipper or Velcro, reducing the risk of bursting.
Flexible repair methods: glue, zipper repair band, Velcro repair band, and portable hot air gun.
Several automatic ducting welding production lines with a monthly output of 20,000 flexible ventilation tubes guarantee an assured batch order lead time.
Pallet packing will be designed according to the order quantity and the container size, trying to save transportation costs.
As one of the Chinese standard drafters for flexible ventilation ducting, Foresight is dedicated to the research, design, and development of underground ventilation safety, always taking responsibility for improving the quality of the flexible ventilation tube, extending the service life, reducing the frequency of replacement, and lowering the energy consumption of ventilation equipment, as well as continuously optimizing the unit tunneling cost to improve the product's overall cost performance.
