On December 18, 2020, an appraisal team composed of experts and scholars such as China Building Metal Structure Association, Valve Standard Committee, Hefei General Machinery Research Institute Valve Research Institute, Water Department, etc. conducted product technical appraisal of 1200D 42Hs-10Q double eccentric bidirectional metal seal butterfly valve developed by Ningbo Yiji Valve Manufacturing Co., LTD.

At the appraisal meeting, the experts carefully visited the Ningbo one machine valve processing workshop, assembly workshop, test site, etc., detailed understanding of the company's production and quality assurance capabilities, listened to the Ningbo one machine double eccentric bidirectional metal seal butterfly valve research and development, production, testing, verification and other reports, strict review of the new product testing report and identification data.

After testing, the double eccentric bidirectional metal seal butterfly valve product performance fully meet the requirements of standards and technical agreements, bidirectional metal seal butterfly valve positive and reverse bidirectional seal full load zero leakage, the performance is higher than GB/T13927-2008 "Industrial valve pressure test" standard requirements, butterfly valve seal pair for the spherical line seal structure, light and flexible opening and closing, It is higher than the standard requirements of GB/T12238-2008 "Flange and clamp connection elastic seal butterfly valve" and JB/T8527-2015 "Metal seal Butterfly Valve".

China is a relatively scarce country of water resources, the rational allocation and utilization of water resources, more benefits to the people's livelihood has been promoted to the national strategy.

At the same time, China's urbanization rate continues to increase rapidly, and the space is huge, urban development is becoming more and more large trend, and the supporting urban water pipe network urgently needs a positive, reverse two-way sealing reliable, anti-aging, erosion resistance, abrasion resistance, corrosion resistance, long service life butterfly valve.

For urban water supply conditions, after years of research and accumulation, innovative development and production of urban water supply special double eccentric bidirectional metal seal butterfly valve, the product has been long-term practical verification, product performance in the domestic leading level, the specific performance is: Positive and negative pressure bidirectional zero leakage, anti-aging, erosion resistance, abrasion resistance, corrosion resistance, light and flexible opening and closing, small torque, greatly improved service life. Once put into the market, won the market trust and recognition. It is the industry recognized urban water supply gate valve, butterfly valve upgrade products, is a new project, new pipeline products, the domestic market demand is huge.
     
About a machine valve

To provide more advanced control systems in the field of social fluids

Ningbo Yiji Valve Manufacturing Co., LTD., founded in 1958, is a national high-tech enterprise with more than 60 years of history and large and medium-sized valve manufacturing qualifications. The company registered capital of 10.08 million yuan, the factory covers an area of 33,300 square meters, has a provincial engineering technology center, the configuration of high and intermediate professional and technical personnel 15 people, with finishing equipment, special equipment, physical and chemical equipment and a full range of valve testing equipment.

The company has passed the quality management, environmental management, occupational health and safety management system, the General Administration of Quality Inspection TS, the European Union CE, the American Petroleum Institute API, the United Kingdom WRAS, China Environmental product Mark, China water-saving products, worm gear transmission IP68 waterproof and dustproof certification.