Yonglong Valve Upgraded Version "Stainless Steel Ammonia Stop Valve"

Shanghai Yonglong is a pioneer in the "ammonia valve, ammonia valve, liquid ammonia valve" industry. It is an industrial grade valve enterprise that integrates the research and development, manufacturing, assembly, sales, and maintenance of emergency shut-off valves, electric shut-off valves, pneumatic shut-off valves, hydraulic shut-off valves, low-temperature shut-off valves, ammonia shut-off valves, liquid ammonia shut-off valves, ammonia shut-off valves, low-temperature shut-off valves, and low-temperature ball valves. The product has a reasonable design structure, novel appearance, and long service life, and is widely used in industries such as petroleum, chemical, metallurgical, power, papermaking, textile, food, refrigeration, and pharmaceuticals.

Stainless steel internal thread ammonia shut-off valve picture _ Shanghai Yonglong

'Where cannot be changed' is a technological reform of 'Yonglong Valve'. Through meetings with engineers, technicians, workshop directors, and key technicians, we have discussed the low yield, rough surface, sand holes, and bubbles generated during the casting process of small-diameter 'liquid ammonia shut-off valves, ammonia shut-off valves, and ammonia shut-off valves' series blanks. In order to highlight the characteristics of our products, we have changed our casting process from sand casting to investment casting parts, and replaced manual welding with mechanical rolling welding. We have completed the transformation and upgrading towards deep processing and casting expansion products, and created a new product concept centered on providing integrated solutions, end products, and customer service. Our core competitiveness lies in maximizing added value for our company's products.

Stainless steel external thread ammonia shut-off valve picture _ Yonglong Valve

From 2020 to 2021, engineers and technicians visited multiple precision casting companies in Zhejiang and Jiangsu for inspections and exchanges, and selected a large-scale professional manufacturer specializing in wax loss investment casting for long-term cooperation. The testing equipment for silica sol precision casting includes spectral analyzer, metallographic microscope, tensile testing machine, low-temperature impact testing machine, X-ray flaw detector, magnetic particle flaw detector, ultrasonic flaw detector, coordinate measuring instrument, and image measuring instrument, which meet the comprehensive testing requirements for material physical and chemical properties, non-destructive defect testing, high-precision geometric dimension testing, etc., and can ensure high standard precision castings.

Stainless steel flange ammonia shut-off valve picture _ Shanghai Yonglong Valve Factory

The motto of Shanghai Yonglong Valve Factory is "To stand still is to regress, to change constantly, to be ahead of others, not behind them. If others have it, we must do better, and if others do not have it, we must have it. For us, quality is the root of enterprise survival, and integrity is the foundation of enterprise development. "Shanghai Yonglong" always stays at the forefront of technology, develops more innovative solutions, and always puts reliable quality first, eliminating worries for users.