Rainwater utilization and infiltration equipment series! It removes dirty initial rainwater and directs clean rainwater to storage tanks or infiltration systems.
We would like to introduce the Tōtetsu Rainwater Diverter and Dust Removal Device "Bunryū Type I/II." Large visible dust and debris are removed by a strainer, while contaminants dissolved in rainwater are removed by diverting the initial rainwater and discharging it externally. The "Bunryū Type I" is primarily installed at the top of the tank or on the vertical downspout. If water needs to be sent to a distant tank or if the piping is at a higher position than the diverter, please use the "Bunryū Type II (standard type)." 【Features of Bunryū Type I】 ■ Debris such as leaf litter that flows down with the rainwater is removed by the strainer at the top of the main body, and finer dust is further removed inside the main body, allowing clean rainwater to be directed to storage tanks or infiltration pits. ■ No regular maintenance is required. ■ The water diversion rate can be adjusted as desired using the "knob." ■ Its compact size does not require a special location for installation. *For more details, please download the PDF or feel free to contact us.
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basic information
【Bunryu II Type Features】 ■ Can transport and store rainwater to a tank located far from the house using the water pressure (potential energy) of rainwater. ■ Excellent removal effect for initial rainwater and dust. ■ The management box can be placed at a low position above ground, making maintenance easy. ■ Compatible with almost all vertical downspouts from small to large diameters. ■ Outdoor specification. *For more details, please download the PDF or feel free to contact us.
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For more details, please download the PDF or feel free to contact us.
catalog（1）
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CAD data（4）
| Model number | overview | File |
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| Rainwater Utilization Distribution ❶ |
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| Rainwater Utilization Distribution ❶ |
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| Rainwater Utilization Distribution 2 |
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| Rainwater Utilization Distribution 2 |
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Company information
Tōtetsu Co., Ltd., a long-established manufacturing company since the 8th year of the Taisho era 【Partial incorporation on September 1, 2024】➡ Tōtetsu Plus has started Tōtetsu Plus handles the following products: 1) Equipment for waterways and retaining walls that prevents floating destruction of waterway structures has a history of about 50 years. (Float valve type weep holes, side drainers, under drainers, pad filters, TM filters, etc.) 2) Comprehensive manufacturer of rainwater storage and utilization Aiming for the full-scale utilization of rainwater (Proposing higher quality rainwater utilization with initial rainwater cut-off products. Handling above-ground tanks and storage tanks.) 3) Backflow prevention valves for drainage Discharges water from hand holes, joint utility trenches, and information boxes, preventing groundwater intrusion. 4) The original sandbag station Leave it to us for sandbag stations. Our sandbag station is foldable, making it easy to move and transport. We meet various needs with different sizes and colors. 5) Basket mats / futon baskets New futon baskets as exterior items <Gabion Exterior Retona>