Industrial chemical, petrochemical and process systems require valves capable of handling highly corrosive fluids, acids, chlorides and other aggressive media. African Valve, an Hastelloy Valves Manufacturer in Nigeria, provides Hastelloy valves designed for reliable isolation and flow control in severe corrosion applications. Hastelloy is a family of nickel-based alloys containing varying amounts of chromium, molybdenum and other alloying elements, offering strong resistance to pitting, crevice corrosion, stress-corrosion cracking and chemical attack.
Hastelloy Valves Features
- Excellent corrosion resistance - For severe chemical services
- Pitting & crevice resistance - Suitable for chloride-containing media
- Chemical resistance - Suitable for selected acids and aggressive fluids
- Stress-corrosion resistance - Suitable for selected severe environments
- High-temperature capability - Grade and service dependent
- Reliable isolation - For process pipelines and equipment
- Multiple valve types - Gate, globe, ball, check, butterfly and plug
- Flexible operation - Manual, gearbox, pneumatic or electric
Technical Specifications
Parameter | Specification |
Valve Type | Hastelloy Gate / Globe / Ball / Check / Butterfly / Plug / Needle Valve |
Material Grade | Hastelloy C276 / C22 / B2 or project-specified grade |
Application | Chemical / Petrochemical / Oil & Gas / Pharmaceutical / Process Piping |
Size Range | Typically DN15 to DN600 or larger, depending on valve type |
Pressure Rating | Class 150 / 300 / 600 / 900 / 1500 / 2500 or PN-rated options |
End Connection | Flanged / Threaded / Socket Weld / Butt Weld |
Operation | Handwheel / Lever / Gear Operated / Pneumatic / Electric Actuated |
Flow Direction | Bi-Directional or Uni-Directional, depending on valve design |
Temperature Range | Application dependent |
Testing | Pressure and Leakage Testing according to applicable standards |
Materials & Components
- Body: Hastelloy C276 / C22 / B2
- Bonnet: Hastelloy / Nickel Alloy
- Disc / Ball: Hastelloy C276 / C22
- Stem / Shaft: Hastelloy / Nickel Alloy / Corrosion-Resistant Alloy
- Seat: PTFE / RPTFE / Graphite / Metal
- Bearing: Hastelloy / Stainless Steel / PTFE-Based Materials
- Gasket: PTFE / Graphite / Spiral Wound
- Packing: Graphite / PTFE-Based Materials
- Fasteners: Hastelloy / Stainless Steel / Corrosion-Resistant Alloy
- Trim: Hastelloy / Nickel Alloy / Application-Specific Alloy
Applications
- Chemical Processing – Aggressive chemicals and acids
- Petrochemical & Refining – Corrosive process systems
- Oil & Gas – Corrosive fluid and process piping
- Fertilizer Plants – Chemical process services
- Pharmaceutical – Corrosive process media
- Power Generation – Selected high-temperature services
- Wastewater Treatment – Corrosive treatment systems
- Industrial Processing – Severe corrosion applications
In Nigeria, Hastelloy valves are particularly relevant to oil & gas, petrochemical, refining, chemical processing, fertilizer and industrial process facilities where high corrosion resistance is required.
Testing & Standards
- Design: ASME B16.34, where applicable
- Testing: API 598 / ISO 5208, depending on valve type
- Valve-Specific: API 600 / API 602 / API 594 / API 599 / API 609 / API 6D, depending on valve type
- Dimensions & Connections: ASME B16.5 / B16.10 / B16.25, where applicable
- Inspection: Project-specific inspection and testing requirements
Standard Hastelloy Valves Products
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