A lineup of band-type one-way valves and drain one-way gates!
The "One-Way Series" is a backflow stopper that prevents external water from flowing back during floods or high tides. We offer a lineup including the lightweight and corrosion-resistant "Sewer One-Way Valve," the double-hinge type "Simple One-Way Valve," and the "Drain One-Way Gate." We also provide the "Tobichirazu Board," a secondary pipe inside the manhole that can be easily adjusted to fit the site dimensions. 【Sewer One-Way Valve (Type N1) Features】 ■ Prevents external water from flowing back during floods or high tides ■ Lightweight, corrosion-resistant, and watertight structure ■ Usable for drainage pipes with diameters from φ75 to φ600 ■ Recommended water depth within 2.0m (from the bottom of the pipe) *For more details, please refer to the PDF materials or feel free to contact us.
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【Product Lineup】 ■ Sewer One-Way Valve: Type N1 (for new pipes), Type NU (for existing pipes) ■ Simple One-Way Valve: Type N8M (round), Type N8K (square), Type N8MN (round, no stop) ■ Simple One-Way Valve (band type): Type N9 ■ Simple One-Way Valve: Type N10 ■ Drain One-Way Gate: Type N12SN ■ Manhole Internal Sub-Pipe "Tobichirazu Board (Debris Prevention Plate)" *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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We are engaged in the comprehensive manufacturing and sales of water supply and drainage materials under the catchphrase 'I want to return clean water to the earth.'