Description
Material:
Forged Floating Ball Valve Bodies:
- Carbon Steel:
- ASTM A105: A common choice for general-purpose applications.
- Alloy Steel:
- ASTM A182 F1: Suitable for higher temperature and pressure applications.
- ASTM A182 F9: Offers good resistance to corrosion and oxidation.
- ASTM A182 F11: Provides excellent resistance to high temperatures and pressures.
- Stainless Steel:
- ASTM A182 F304/304L: Offers good corrosion resistance and is suitable for a wide range of applications.
- ASTM A182 F316/316L: Provides excellent resistance to corrosion, particularly in chloride-containing environments.
Cast Floating Ball Valve Bodies:
- Cast Iron:
- Gray Iron: Suitable for lower pressure applications and general service.
- Ductile Iron: Offers improved strength and toughness compared to gray iron.
- Cast Steel:
- ASTM A216 WCB: A common choice for general-purpose applications.
- ASTM A216 WCC: Suitable for higher temperature service.
- Alloy Steel:
- ASTM A217 WC9: A common choice for high-temperature service.
- ASTM A217 WC6: Offers good strength and toughness at elevated temperatures.
Ball Materials for Floating Ball Valves
- Stainless Steel:
- 304/304L: Offers good corrosion resistance and is suitable for a wide range of applications.
- 316/316L: Provides excellent resistance to chloride-containing environments.
- Carbon Steel:
- Used in less demanding applications where corrosion resistance is not a primary concern.
- Alloy Steels:
- Used in high-temperature or corrosive service applications. Specific alloys will depend on the specific requirements.
- Special Alloys:
- Materials like Stellite or Monel may be used in highly corrosive or abrasive service conditions due to their exceptional wear and corrosion resistance.
Temperature Rating
- Carbon Steel: Typically, up to 425°C (800°F)
- Stainless Steel (316): Up to 650 °C (1200°F)
- High-Performance Alloys: Can handle even higher temperatures, often exceeding 816 °C (1500 °F)
Packing Material
- Graphite: Offers excellent sealing performance and resistance to high temperatures.
- PTFE: Provides low friction and good chemical resistance.
- Elastomers: Such as NBR, Viton, and EPDM, offer good sealing performance and flexibility
- Ceramic: Highly resistant to high temperatures and corrosive environments
- Metallic Packings: Suitable for high-temperature and high-pressure applications
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