Technical Specifications / Parameters
Parameter Specification / Description
Model Series Fisher HP (e.g., HP, HPT, HPB - specific design variants)
Type Top-Entry, Unbalanced or Balanced, Cage-Guided Globe Valve
Size & Pressure Class Sizes: 1" through 8" (DN25 through DN200)
Pressure Class: ANSI Class 900, 1500, 2500, 4500.
End Connections Flanged (RF or RTJ), Butt-Weld.
Body Materials Forged Carbon Steel (A105), Forged Stainless Steel (F316), Alloy Steels (F22, F91).
Trim Materials Standard Trim: 17-4PH Stainless Steel (hardened).
Severe Service Trim: Stellite (on plug and seat), 440C Stainless Steel, Tungsten Carbide.
Temperature Range Standard: -50°F to +1000°F (-46°C to +538°C). Special designs for cryogenic or higher temperatures.
Flow Characteristics Modified linear, equal percentage, or quick open, determined by the cage profile.
Leakage Class Standard (Metal Seat): ANSI/FCI 70-2 Class IV.
Soft Seat Option: ANSI/FCI 70-2 Class VI.
Noise & Cavitation Control Cavitrol® Trim: Multi-stage anti-cavitation trim (Cavitrol II, III, Hex) is available.
Whisper Trim®: Advanced noise attenuation cages are available for high-noise duties.
Flow Capacity (Cv) Varies significantly by size, trim, and pressure class. Ranges from low Cv (for small sizes with reduced trim) to very high Cv (for large sizes).
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