Ultra low temperature valve design standards: 1. Design: API6D, JB/T77492. Routine inspection and test of valves: API598. 2. Low temperature inspection and test of valves: according to JB/T7749. 3. Drive mode: manual, bevel gear drive and electric drive device. 4. Valve seat form: the valve seat is of welded structure, and the sealing surface is welded with cobalt base carbide to ensure the sealing performance of the valve. 5. The ram adopts elastic structure, and the pressure relief hole is designed at the pressure inlet end. 6. The one-way sealed valve body is marked with a flow direction sign. 7. Low temperature pneumatic ball valve, gate valve and globe valve adopt long neck structure to protect the packing.

Increase the investment in the hose industry, pay close attention to the development of new products and the implementation of new technologies and processes, expand the scope of hose application from time to time, improve the overall technical level and market competitiveness of the hose industry, survive with variety and quality, and develop with scientific and technological progress.
In order to meet the needs of the domestic and foreign markets, it is necessary to speed up the development of new products, improve the production and quality, increase the variety, and improve the output. In recent years, the demand for stainless steel hoses in the processing areas of armored optical cables, fine optical rulers, optical measuring instruments, medical instruments, machinery and equipment has increased year by year. At present, these products still rely on imports at home, so it is necessary to develop high-quality series of tools as soon as possible to replace imports. At present, the products to be developed urgently include: single button stainless steel pneumatic butterfly valve with an outer diameter of less than 3mm and double button stainless steel hose with an outer diameter of more than 25mm.
Strengthen the internal management of the enterprise, improve the consumption process from time to time, reduce the cost of consumption, and improve economic efficiency. Take the road of combining enterprises, guide the development of the industry, invent my own brand, and actively participate in international competition. Rely on scientific and technological progress, increase scientific and technological investment, update equipment, pay close attention to the research and implementation of new technologies, new processes and new products, and improve the technical level of China's hose industry.