The ZWNS model ultra-low nitrogen vacuum hot water boiler launched by Zhengzhou Fangkuai Boiler Factory is cheap, high in operating efficiency, and low in pollutant emissions. It is a very cost-effective heating hot water boiler. What is the operating principle of this type of boiler? How to achieve high-efficiency and low-emission operation? Let Zhengzhou Fangkuai Boiler Factory do it for you one by one.
Under normal atmospheric pressure, the boiling point of water is 100°C (1pa); when the pressure is lower than the normal pressure value, the boiling point of water will also be lower than 100°C. Generally speaking, when the atmospheric pressure is 0.7pa, the boiling point of water is 90 degrees, when the pressure is 0.3pa, the boiling point of water is 70 degrees, and when the pressure is 0.1pa, the boiling point of water is 40 degrees.
The ZWNS model ultra-low nitrogen vacuum hot water boiler forms a vacuum chamber after being pumped by vacuum. The combustion makes the heating medium water in the vacuum chamber boil and evaporate to produce negative pressure water vapor. The steam condenses outside the heat exchanger tube and heats the cold water in the tube for heating. Heating provides high-temperature hot water.
The heat medium water inside the ZWNS model ultra-low nitrogen vacuum hot water boiler is high-purity water that has undergone special treatments such as descaling and deoxidation. It is filled before the factory leaves the factory and is closed in the boiler (vaporization, condensation and vaporization) during use. Rather than increase or decrease, corrosion and rust will not occur after 20 years of continuous use.
In addition, the ZWNS model ultra-low nitrogen vacuum hot water boiler is also equipped with an ultra-low nitrogen burner that adopts advanced domestic and foreign technology. It can use oil and gas fuels. After operation, the pollutant emissions (especially nitrogen oxides) are lower than 30 mg/m3, it can still be used normally under my country's strict environmental policy, and it is not troubled by environmental protection issues.
September 24–27, 2026 | Booth 4A27 | Cairo International Conference Center (CICC), Egypt
Dabonn Energy is excited to announce its participation in EGYPT STITCH & TEX EXPO 2026, one of the leading textile machinery and technology exhibitions in North Africa and the Middle East. The exhibition will take place from September 24 to 27, 2026, at the Cairo International Conference Center (CICC) in Nasr City, Cairo, Egypt.
Visitors are warmly invited to Booth 4A27, where Dabonn Energy will present its latest industrial boiler technologies and energy-efficient steam solutions designed specifically for the textile industry.
Steam plays a critical role throughout textile manufacturing, including dyeing, printing, bleaching, washing, drying, and finishing. A reliable boiler system directly affects production efficiency, energy consumption, and operating costs.
At EGYPT STITCH & TEX EXPO 2026, Dabonn Energy will showcase a range of industrial boiler solutions engineered to meet the demanding requirements of textile factories, including:
Our engineering team will provide professional consultation to help visitors select the most suitable boiler system based on production capacity, fuel availability, steam demand, and energy-saving goals.
As textile manufacturers continue to pursue higher efficiency and lower operating costs, energy-saving boiler systems have become increasingly important.
Dabonn Energy integrates advanced combustion technology, intelligent control systems, and optimized heat transfer designs into every boiler solution. These technologies help customers achieve:
Whether powered by natural gas or biomass fuels, our industrial boilers are designed to deliver dependable performance while supporting sustainable manufacturing.
During the exhibition, visitors will have the opportunity to meet directly with Dabonn Energy's technical and sales specialists to discuss a wide range of industrial heating solutions.
Topics include:
Our team will also share successful application cases from textile manufacturers across different countries and explain how efficient boiler systems can improve productivity while reducing energy costs.
Egypt continues to strengthen its position as an important textile manufacturing hub in Africa and the Middle East. With increasing investment in textile production, the demand for reliable and energy-efficient steam generation equipment is also growing.
By participating in EGYPT STITCH & TEX EXPO 2026, Dabonn Energy looks forward to establishing new partnerships with textile manufacturers, engineering companies, distributors, and industrial investors throughout Egypt, North Africa, and neighboring regions.
We remain committed to delivering high-quality industrial boiler equipment backed by professional engineering support and comprehensive after-sales service.
We sincerely invite all visitors attending EGYPT STITCH & TEX EXPO 2026 to stop by Booth 4A27 and explore how Dabonn Energy can help improve the efficiency and sustainability of your textile production.
Exhibition: EGYPT STITCH & TEX EXPO 2026
Venue: Cairo International Conference Center (CICC), Nasr City, Cairo, Egypt
Date: September 24–27, 2026
Booth Number: 4A27
We look forward to meeting customers and partners from around the world and discussing innovative industrial boiler solutions for the future of the textile industry.
Recently, Zhengzhou Fangkuai Boiler Sales Co., Ltd. traveled to Dhaka, the capital of Bangladesh, to attend the Bangladesh International Textile, Knitwear & Garment Industry Exhibition (BTKG 2026). It showcased industrial thermal equipment and system solutions adapted to the whole process of textile printing and dyeing, actively expanding the South Asian market.
Bangladesh is an important global producer and exporter of textiles and garments. As a pillar local industry, the textile sector has long-term and strong demand for high-efficiency, stable and energy-saving industrial boilers and thermal equipment, with broad market potential. This exhibition participation is an important measure for Zhengzhou Fangkuai Boiler Sales Co., Ltd. to advance its internationalization strategy and further explore overseas markets.
Relying on its technological accumulation and manufacturing advantages in the field of thermal energy equipment, the company provides targeted thermal energy solutions for local textile, printing and dyeing, garment manufacturing and other industries, helping enterprises improve production efficiency and reduce operating costs. In the future, Zhengzhou Fangkuai Boiler Sales Co., Ltd. will continue to focus on overseas market demands, continuously optimize its product and service system, facilitate the high-quality development of the global textile industry with professional and reliable products, and steadily enhance the brand’s competitiveness and influence in overseas markets.
Trust stems from quality
At the beginning of the new year, Fangkuai Boiler and a leading domestic new energy company have reached another important cooperation, successfully signing an order for a total of 500 steam tons.
