In Zhejiang Province this year, emergency cleanup operations for unqualified pressure reducing valves were launched urgently throughout the province, and only 691 inferior pressure reducing valves were seized in Pujiang County. People in the industry believe that although the pressure reducing valve is a small part, it reflects that the quality of domestically produced valves is not optimistic. The key to maintaining the quality of the valve from the source is to improve the management level of the company.

It is understood that there are about 6,000 valve manufacturing enterprises in China, 900 of which have an annual output value of more than 5 million yuan. According to the data provided by the “Pump Town of China Pump Valves”—Zhejiang Yongjia County Pump Valve Industry Association, only 300 valves with more than 3,000 specifications are produced in this county, which are widely used in state-owned large-scale enterprises and key projects. Some of the valves produced by some domestic companies have the disadvantages of leakage, leakage, appearance quality, short life, inflexible operation, and unreliable valves and pneumatic devices. Some products are only equivalent to the international level in the early 1980s. Experts predict that the future growth of the valve market will be mainly in the fields of electric power, petrochemicals, fertilizers, and environmental protection. For valve companies, whoever has good technology and excellent quality, who can continuously develop new products, who will be able to compete in the fierce competition? Grab the opportunity.

Experts suggest that to improve the quality of valves, efforts must be made in production management, technology, and new product development. First, we must strengthen management. Production and technology management should be brought into line with international standards as soon as possible, accelerate the adoption of international standards and foreign advanced standards, increase investment, introduce modern and automated equipment, and innovate existing products. At the same time, valve companies should take effective measures for the selection of raw materials for castings and forgings, casting and forging processes, and heat treatment, so that the internal quality and appearance of castings and forgings can reach international standards. Second, we must vigorously develop high-tech new products, focusing on large-scale petrochemical, oil and gas gathering pipelines, coal liquefaction and other major projects supporting the development of new valve, such as 800,000-ton and above ethylene plant cracker export pipeline supporting high temperature valve Large-diameter high-pressure ball valves, large-diameter oil pipeline ball valves, and cryogenic valves for liquefied natural gas. Second, we should strengthen the internal and external leakage of the valve, strictly mechanical processing technology, vigorously develop and promote new types of sealing materials, improve the accuracy of key parts of the product processing, extend product life, so that the valve "a short two leakage" phenomenon has been fundamentally improved.