Description
This is a ventilation device developed to prevent accidents during pipeline work, and can deliver a large volume of air continuously while maintaining adequate workspace.
It features a ring-shaped design to match the shape of manhole covers, and the ring can also be used as a handrail when climbing in and out of the manhole.
Features
- Can deliver a large volume of air without blocking the manhole opening.
- Allows easy movement of workers and materials in and out even during ventilation.
- Can be used as a handrail when climbing in and out.
- Easy to install and enables rapid ventilation.
HAST®
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Worker access during ventilation
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Ventilation while bringing in materials
HAST-e
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Installed
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Device being carried
Specifications
| HAST® | ・Dimensions (inner diameter): 600 mm ・Total weight: 45 kg ・Material: SUS304 | |
|---|---|---|
| HAST-e | Main Unit | Power Supply Box |
| ・Dimensions (inner diameter): 600 mm ・Total weight: 13 kg ・Material: SUS304 (frame), Neoprene rubber (nozzle) | ・Dimensions (internal): 320×220×170 mm ・Total weight: 8 kg ・Material: SS with melamine baked coating ・Voltage: AC100V, DC24V | |
| Air Deflector | ・Dimensions: 1,100×750×300 mm ・Total weight: 3 kg ・Material: Flame-retardant vinyl | |
Track Record
HAST® was commercialized in FY2013, and HAST-e in FY2015. By the end of FY2023, HAST® had achieved sales of 35 units, and HAST-e of 308 units.
On June 25, 2020, we entered into a license agreement for HAST-e with Taiwanese company NO DIG.
License agreement signing ceremony