High Temperature Butterfly Valves

High Temperature Butterfly Valves Structural Design

• Eccentricity Types:
  • Double Eccentric: Reduces disc-seat friction, suitable for 400°C~600°C.
  • Triple Eccentric: Metal-to-metal seal for zero leakage in high-temperature gas systems (e.g., 650°C+).
• Body Features:
  • Integral heat dissipation fins for temperature control.
  • Welded or bolted construction (forged/welded body for high-pressure applications).
• End Connections:
  • Flanged (RF/RTJ, ASME B16.5), Butt Weld (BW, ASME B16.25), Lap Joint.
  • Custom flanges compliant with EN, JIS, or special project requirements.

High Temperature Butterfly Valves Performance Parameters

• Leakage Rate:
  • Soft-seal: ≤0.1% of rated flow (API 598).
  • Metal-seal: Bubble-tight (ISO 15848-1 Class A) for critical applications.
• Operation:
  • 90° quarter-turn actuation (manual, electric, pneumatic, hydraulic).
  • Actuator options: High-temperature-resistant electric motors (with thermal insulation) or pneumatic cylinders with heat shields.
• Testing:
  • Hydrostatic test (1.5x rated pressure).
  • High-temperature leakage test (simulated service conditions).
  • Fire-safe test (API 607 compliant).

High Temperature Butterfly Valves Compliance & Certifications

• Material Certifications:
  • Mill test reports (MTR) for alloy components.
  • Compliance with NACE MR0175 (for sour service, if applicable).
• Industry Approvals:
  • CE (PED 2014/68/EU), API Monogram, CRN (Canada), GOST (Russia).
  • Third-party inspection options (e.g., Lloyd’s, Bureau Veritas).