Technical Parameters Category Parameter Specification / Description General Model Series 4210 Type Rotary Vee-Ball Control Valve Flow Characteristic Near Equal Percentage Pressure & Temperature Pressure Rating (ANSI) ANSI Class 150 & 300 Max. Working Pressure Up to 740 psig (51 bar) for Class 300. Temperature Range Standard Seat: -20°F to 400°F (-29°C to 204°C) High-Temp Seat: Up to 500°F (260°C) Flow & Sizing Valve Sizes 1" to 12" (DN 25 to DN 300) Flow Capacity (Cv) Ranges from ~50 (for 1") to over 4000 (for 12") depending on port degree (e.g., 60°, 90°). End Connections Flanged (RF, RTJ) or Buttweld (for larger sizes) Materials & Construction Body Materials Carbon Steel (WCB), Stainless Steel (CF8M), Alloy 20, Duplex Stainless Steel. Ball Material Typically Stainless Steel with various hard coatings (e.g., Stellite, Chrome Carbide) for abrasion resistance. Seat Material Flexible, Reinforced TFE (Standard for bubble-tight shut-off). Metal seats available for high temperatures. Actuator Mounting Designed for Fisher 1055/1061/1070 series pneumatic actuators or other rotary actuators. Package Options Often sold as a complete package (e.g., 4210-EM0) with actuator and positioner.

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