Pioneer of indoor ventilation systems "Morinaga Dolgo Ventilation Valve"
The Morinaga Dolgo ventilation valve is a revolutionary drainage ventilation valve that can process ventilation pipes indoors. Developed in Sweden in 1974, it has undergone continuous improvements to achieve a simpler and higher quality drainage ventilation system. The Morinaga Dolgo ventilation valve series is evaluated for performance (airflow, airtightness, durability, and five other criteria) using testing methods compliant with international standards (European standard EN12380-2002). We have been recognized by our customers for providing reliable products of high quality, and we have continued to sell them for over 40 years. As sales volume has increased, customer demands have diversified, and we have continued to expand our product range, which now includes the "Outdoor Dolgo Ventilation Valve" for outdoor use, the "Mini Dolgo" for use under sinks, the "Dolgo Low-level Ventilation Valve" for horizontal pipes, and the compact and detachable "LPD-PICO." As a pioneer in indoor ventilation methods, we will continue to provide innovative and excellent products in the future.
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Drainage vent valve
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Morinaga Engineering Co., Ltd. Housing Equipment Sales Department A sales business for housing equipment that pursues a "comfortable and healthy living space." We prioritize the safety of the people who work there and those who live there above all else, proposing unique and high-quality equipment, systems, and solutions.
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