Custom Stainless Steel Valve Bonnet – Investment Casting
Description
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PRECISION CAST OR FORGED CONSTRUCTION: Manufactured using advanced investment casting or closed-die forging processes. The valve bonnet is produced to precise dimensions with smooth surface finish and uniform grain structure, ensuring reliable performance under pressure.
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PREMIUM STAINLESS STEEL MATERIAL GRADES: Available in multiple stainless steel grades to meet specific service conditions:
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CF8 / AISI 304: Excellent general corrosion resistance for water, oil, and mild chemical services
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CF8M / AISI 316L: Enhanced resistance to chlorides, acids, and aggressive media
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F304/F316L: Forged versions for high-pressure applications
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Duplex 2205 / Super Duplex: Superior strength and pitting resistance for offshore and sour service
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MULTIPLE BONNET CONNECTION TYPES: Designed to match various valve body connections:
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Bolted Bonnet (BB): Flanged connection with gasket for easy maintenance and high-pressure service
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Screwed Bonnet: Threaded connection for small-size valves and cost-effective applications
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Welded Bonnet: Permanent leak-proof connection for critical services and nuclear applications
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Union Bonnet: Compact design with union nut for easy disassembly
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Parameter
| Material Grade | Equivalent | Tensile Strength | Yield Strength | Key Applications |
|---|---|---|---|---|
| CF8 | AISI 304 | ≥485 MPa | ≥205 MPa | Water, oil, gas, general service |
| CF8M | AISI 316L | ≥485 MPa | ≥170 MPa | Chemical, marine, food processing |
| F304 | AISI 304 Forged | ≥515 MPa | ≥205 MPa | High-pressure, critical service |
| F316L | AISI 316L Forged | ≥485 MPa | ≥170 MPa | Offshore, pharmaceutical |
| Duplex 2205 | UNS S32205 | ≥620 MPa | ≥450 MPa | Sour gas, seawater, aggressive environments |
Application
