Since 1988 Offset Valve Manufaturer
EPC/Design Institute Use Only
For 38 years, we have provided reliable eccentric products for all operating conditions, from raw water intake to wastewater treatment.Customization supported.
Since 1988 Offset Valve Manufaturer
EPC/Design Institute Use Only
For 38 years, we have provided reliable eccentric products for all operating conditions, from raw water intake to wastewater treatment.Customization supported
Products
SINCE1988.The main products include large-caliber bidirectional metal hard-sealed butterfly valves, bidirectional rubber soft-sealed butterfly valves, bidirectional hard-sealed rotary ball valves, top-mounted eccentric semi-ball valves, hard-sealed wear-resistant eccentric semi-ball valves, elastic soft-sealed gate valves, expansion joints, check valves, exhaust valves and other products.
ZHONGNAN VALVE
ZHONGNAN VALVE
Double Eccentric (Offset) Butterfly Valve
Supports customization. This butterfly valve is a type produced by our factory, mainly used in water supply plants, power plants, steel plants, smelting plants, paper mills, chemical plants, water supply projects, environmental protection facility construction, and other water supply and drainage projects. It is especially suitable for regulation and shut-off devices in water flow pipelines.
ZHONGNAN VALVE
ZHONGNAN VALVE
Triple Eccentric Extended Stem Butterfly Valve
Supports customization, the triple eccentric(offset) extended stem butterfly valve is a high-performance butterfly valve with advanced structure and reliable sealing. The valve adopts a triple eccentric(offset) design, allowing the valve disc to operate with almost no friction during opening and closing, ensuring a longer sealing surface lifespan. The extended stem structure facilitates operation in underground pipelines, deep wells, and environments with thick insulation layers, ensuring valve reliability while improving installation and maintenance convenience.
Applications
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Wastewater treatment plants
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Power Industry
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Construction Industry
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Petrochemical Industry
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Municipal Engineering
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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Water Conservancy Project
Widely used in petroleum, metallurgy, electricity, medicine, natural gas, tap water, high-rise buildings, sewage treatment plants
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ABOUT US
ZHONGNAN VALVE
Zhengzhou Zhongnan Valve Co., LTD. (37 years) is a national A1 level manufacturing license enterprise, a national high-tech enterprise! It has ISO and CE certification.
The factory, integrating scientific research, manufacturing, sales and service, owns thick technical strength and modern quality test and experiment center;it has ultrasonic thickness testers, chemical analysis, CAD valve design, extract and efficient CNC manufacturing center, CNC machines and extract test facilities.
Founded in
Factory area
Current employees
Certification
Integrating scientific research, manufacturing, sales, and service; Having strong technical strength and modern quality inspection and testing center
Blog
Committed to becoming a global industrial valve product service provider
Analysis of the application characteristics of seawater butterfly valves in high-salinity conditions
In coastal engineering, seawater desalination, power plant cooling water systems, and marine equipment, pipeline systems transport high-salinity seawater media for extended periods, placing extremely high demands on the corrosion resistance and operational reliability of valve equipment. Seawater butterfly valves, due to their compact structure, rapid opening and closing, and low flow resistance, are widely used in seawater applications, and their application characteristics in high-salinity environments are particularly noteworthy.
Mar 10,2026
Research on the corrosion resistance of desalination plant butterfly valve
The corrosion resistance of desalination plant butterfly valve is the result of the combined effect of material selection, sealing design, and surface protection technology
Mar 05,2026
Analysis of Seawater Butterfly Valve Salt Spray Corrosion Resistance Technology
In seawater transportation, marine engineering, and coastal industrial systems, seawater butterfly valves are exposed to high salinity, high humidity, and oxygen-rich environments for extended periods, making them highly susceptible to electrochemical corrosion and salt spray erosion. Chloride ions in salt spray have extremely strong penetrating power, damaging the passivation film on metal surfaces and causing pitting corrosion, crevice corrosion, and even stress corrosion cracking. Therefore, improving the salt spray corrosion resistance of seawater butterfly valves is crucial for ensuring the safe and stable operation of the system.
Mar 05,2026
Transportation
Support air, land and sea transportation
Customization
Offering options for customers to customize
Enjoy A Discount
Customers can negotiate the purchase price
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