VALVA provides a comprehensive range of Hastelloy valves designed for the most volatile chemical environments. As one of the most versatile nickel-based superalloys, Hastelloy is the premier choice for processes involving high temperatures, mixed acids, and contaminated organic media where standard materials fail.
The Hastelloy Series: Specialized Solutions
We offer three distinct Hastelloy series to target specific industrial challenges:
- Hastelloy C Series (The All-Rounder):The C-series (including C276 and C22) offers exceptional resistance to both oxidizing and moderate reducing environments. It is highly effective against stress corrosion cracking and localized pitting.
- Best for: Acetic acid, acetic anhydride, phosphoric acid, and seawater.
- Hastelloy B Series (The Hydrochloric Acid Specialist):Containing high molybdenum content, the B-series provides unmatched resistance to hydrochloric acid at all concentrations and temperatures below the boiling point.
- Best for: Pure hydrochloric acid, sulfuric acid, and non-oxidizing salt solutions.
- Hastelloy G Series (The Oxidizing Acid Specialist):Designed for complex chemical mixtures, the G-series outperforms most nickel and iron-based alloys in highly oxidizing environments.
- Best for: Nitric/hydrochloric acid mixtures and phosphoric acid processing.
Major Application Fields
- Petrochemicals: Catalytic systems and components handling hydride-containing organic matter.
- Chemical Synthesis: Production of organic and inorganic acids (formic, acetic, phosphoric).
- Environmental Protection: Scrubbers and waste-to-energy systems dealing with flue gas desulfurization.
- Pharmaceuticals: Batch processing involving highly reactive chemical reagents.
Technical Specifications & Material Grades
We manufacture valves using high-purity Hastelloy grades to ensure chemical stability:
| Series | Common Cast/Wrought Grades | UNS Designations |
| Hastelloy B | B, B-2, N12MV, N7M | N10001, N10665 |
| Hastelloy C | C276, C-22, C-4, CW12MV, CX2MW | N10276, N06022, N06455 |
| Hastelloy G | G, G30, CW2M | N06007, N06030 |
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