Zhejiang Jigong Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of hastelloy valve balls in China. If you're going to wholesale cheap hastelloy valve balls made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
Basic Introduction
Hastelloy valve balls are made from high-performance nickel-based corrosion-resistant alloys (such as Hastelloy C276, C22, B2, etc.) as billets, formed through forging, solution treatment, and precision machining. They possess exceptional resistance to strong oxidizing acids, wet chlorine gas, fluorine-containing media, reducing media, and high-temperature composite corrosion environments, effectively resisting pitting, crevice corrosion, intergranular corrosion, and stress corrosion cracking (SCC). Its unique alloy composition design ensures excellent stability in complex corrosion scenarios where oxidizing and reducing media alternate. The product has high sealing surface precision and a dense and uniform microstructure, making it especially suitable for harsh and severe corrosion conditions in hydrometallurgy, pickling processes, fine chemicals, and oil and gas extraction, making it the preferred solution for controlling extremely corrosive fluids.
Product Specification
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Indicator items |
Technical specifications |
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Size range |
1/2" to 36" (supports non-standard customization) |
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Pressure rating |
PN16-PN160(Class150-900) |
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Spherical material |
Hastelloy C-276, C-22, B-3, and other Hastelloy alloy series |
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Manufacturing process |
Forging + solution aging treatment + precision machining + meticulous grinding of sealing surfaces |
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Coaxiality |
≤0.05mm |
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Roundness accuracy |
≤0.02mm |
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Surface roughness |
Ra ≤ 0.4 μm (sealing surface) |
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Outer diameter tolerance |
1/2" – 4": +0.03 mm |
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Inner diameter tolerance |
1/2" – 4": 0~+0.03 mm |
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Applicable temperature |
-196°C to 650°C (depending on alloy grade) |
Product Features
- High-performance nickel-based alloys such as Hastelloy C276/C22/B2 are used, offering excellent resistance to corrosion by oxidizing acids, reducing acids, and mixed acid media
- It is insensitive to chloride ions and halogen media, and its resistance to pitting and crevice corrosion far surpasses that of austenitic stainless steel and copper-nickel alloys
- Excellent resistance to stress corrosion cracking, safe to operate in corrosive environments prone to brittle fractures such as hydrogen sulfide and chloride
- Through forging + solution treatment processes, grain size is uniform, microstructure is dense, segregation and internal stress are eliminated, and comprehensive mechanical properties are reliable
- It can maintain surface stability in high-temperature corrosive media, with strong oxidation and carburization resistance
- The sealing surface balances wear resistance and erosion resistance, suitable for valves with high corrosive conditions containing small amounts of particulate media
Product Application Scope / Usage Scenarios
Applicable media:
Wet chlorine gas, hypochlorous acid, hydrochloric acid (dilute/medium concentration), sulfuric acid (dilute/medium concentration and high-temperature concentrated sulfuric acid), phosphoric acid, acetic acid, formic acid, fluorine-containing media, hydrogen sulfide/carbon dioxide acidic oil gas, seawater, brine, and various mixed acid/salt solutions, etc
Applicable operating conditions:
Strong oxidation-reduction alternating corrosion conditions, high-temperature intense corrosion conditions, high chloride ion concentration environments, hydrochloride-containing acidic oil and gas conditions, fluorine-containing media corrosion conditions, and strong corrosion + moderate scouring composite conditions
Application fields:
Hydrometallurgy (extraction/electrodeposition/leaching pipelines), steel pickling and surface treatment, fine chemicals (chlorination reaction/halogenation processes), oil and gas extraction (downhole and surface gathering and transportation systems), flue gas desulfurization (FGD), nuclear fuel post-processing, pharmaceutical intermediate synthesis, and other highly corrosive fluid treatment systems
FAQ
What are the core advantages of Hastelloy valve balls?
The core advantage of Hastelloy valve balls lies in their "broad-spectrum" tolerance to multiple types of corrosive environments such as strong oxidizing acids, reducing media, and chloride ions. They are especially adept at handling alternating oxidizing and reducing media and complex mixed acid corrosion scenarios. They also have excellent resistance to stress corrosion cracking and pitting and crevice corrosion, allowing them to operate stably and long-term in extreme corrosion conditions that conventional corrosion-resistant materials like stainless steel and titanium cannot handle.
What are the commonly used grades of Hastelloy valve balls? How to choose a model?
Common grades include C276 (general-purpose, resistant to oxidation/reduction dual atmospheres and chloride ions), C22 (broader comprehensive corrosion resistance, suitable for strongly oxidizing media), and B2/B3 (specifically for pure reducing acids such as dilute hydrochloric acid and dilute sulfuric acid, sensitive to oxidizing impurities). Selection should be determined comprehensively based on conditions such as medium composition, temperature, redox potential, and other factors. We recommend customers provide specific process parameters, and our company can assist with selection recommendations.
What are the differences in corrosion resistance between Hastelloy alloy valve balls and titanium valve balls?
Titanium valve balls perform well in oxidizing acids (such as nitric acid, wet chlorine gas) and seawater environments, but have insufficient corrosion resistance in reducing acids (such as dilute hydrochloric acid, dilute sulfuric acid) and fluorine-containing media; Hastelloy alloy valve balls are more suitable for reducing acids and mixed acids, especially performing better in complex corrosive environments such as chloride-containing hydrochloric acid systems and hydrometallurgical leachate. The two have different application focuses and should be selected based on the actual medium composition.
Can Hastelloy alloy valve balls withstand high temperature and high pressure conditions?
Yes, you can. After solution treatment, Hastelloy exhibits excellent high-temperature mechanical properties and structural stability. Combined with suitable valve structural design, it can operate stably at medium and high temperatures (such as the 200°C~400°C range, depending on grade and medium) and corresponding pressure levels. However, it should be noted that different grades have varying high-temperature corrosion resistance. It is recommended to provide detailed operating parameters for specific confirmation when selecting high-temperature models.
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