Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Nitric acid, as an important chemical medium in industries such as chemical engineering, fertilizer, electronics, new energy, and military, exhibits strong oxidizing and corrosive properties. Especially under high concentration and high temperature conditions, it imposes extremely high requirements on the materials, sealing, and operational stability of pump equipment. Therefore, nitric acid delivery systems typically require specialized Haifa corrosion-resistant nitric acid pumps to ensure the long-term safe and stable operation of production units.

Currently, Haifa nitric acid pumps mainly include types such as lined fluoroplastic centrifugal pumps, lined fluoroplastic magnetic drive pumps, lined fluoroplastic self-priming pumps, and stainless steel special nitric acid pumps. Among these, lined fluoroplastic pumps are widely used in medium and low-temperature nitric acid conditions due to their excellent corrosion resistance. These pumps adopt a metal shell lined with fluoroplastic (such as F46, PFA) structure, combining the mechanical strength of metal materials with the corrosion resistance of fluoroplastics, enabling long-term delivery of corrosive media such as sulfuric acid, hydrochloric acid, hydrofluoric acid, nitric acid, and strong oxidizers.

In nitric acid conditions, material selection the pump is particularly critical. For nitric acid room temperature with low medium concentrations, stainless steels such as 304L and 316L meet usage requirements under certain conditions. However, under high concentration and high temperature nitric acid conditions, it is usually necessary to use high-silicon stainless steel, nitric acid-grade materials, Hastelloy, or lined fluoroplastic structures to enhance corrosion resistance. Especially when the medium temperature exceeds 80°C or reaches 120°C, ordinary stainless steel is prone to intergranular corrosion and localized corrosion issues, thus requiring comprehensive selection based on actual concentration and temperature.

Additionally, nitric is volatile and oxidizing, imposing high demands on the sealing system. To reduce leakage risks, magnetic drive pumps are often preferred in some conditions, achieving zero-leakage operation through a seal-less mechanical structure, particularly suitable for toxic, volatile, or high-purity nitric acid delivery systems. For high-temperature, high-pressure, or large-scale process delivery conditions, API standard chemical centrifugal pumps are more commonly, equipped with appropriate flushing and cooling schemes to ensure stable mechanical seal operation.

With the rapid development of new energy, electronic chemicals, and fine chemical industries, the requirements for corrosion resistance,, and intelligent operation of chemical pumps in nitric acid delivery systems are continuously increasing. In the future, high corrosion-resistant nitric acid pumps will play an even more important role in high-end chemical fields.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from the Jingjiang Stainless Steel Pump and Valve Plant of the Iron and Steel Research Institute of the Ministry of Metallurgical Industry, affiliated with Jiangsu Ligong Group Co.,., established in 1958. The company mainly produces API610 chemical process pumps - OH1 pumps, OH2, OH3 pumps,4 pumps, BB1 pumps, BB2 pumps, BB3, BB4, BB5 multistage pumps,1, VS4, VS5, VS6 barrel casing pumps, HES type chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, low-flow high-head pumps, high-temperature molten salt pumps, high-temperature nitric acid pumps, vertical submerged pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps lined fluoroplastic pumps, lined fluoroplastic sandwich pumps, leak-proof pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, oil pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing, Ti alloy pumps,-276 material, Hastelloy,316L, forced circulation pumps, fourth-generation nuclear pumps, nuclear island pumps, special pumps for filter presses, refrigerant pumps, long-shaft vertical submerged pumps, CQC first-level energy efficiency chemical pumps, high-pressure descaling industrial pumps, China chemical pumps. www.jslgpump.com  Tel: 13905263417  E-mail: jslgpump@gmail.com  E-mail: jsareva@163.com