Key Specifications & Parameters Parameter Specification Model SS-252B (with various trim options and actuator types) Valve Type Segmented V-Notch Ball, Rotating Shaft Flow Characteristic Approximated Equal Percentage (inherent, due to the V-notch profile) Sizes 1/2 inch to 8 inches (DN 15 to DN 200) End Connections Flanged: ANSI Class 150, 300, 600 (RF, RTJ) Other: Butt Weld, Socket Weld (available in smaller sizes) Pressure Ratings ANSI Class: 150, 300, 600 Max. Pressure: Dependent on size and class, up to ANSI 600 rating (e.g., 1440 psig @ 100°F / 38°C for Class 600). Temperature Range Standard: -50° to 800°F (-46° to 427°C) Extended: Options available for cryogenic services down to -320°F (-196°C) and high-temperature services up to 1200°F (649°C) with special components. Body Materials Standard: 316 Stainless Steel (CF8M) Options: Carbon Steel (WCB), Alloy 20 (CN7M), Hastelloy C, Duplex Stainless Steel, and others. Trim Materials Ball & Shaft: 316 Stainless Steel (standard) Seat: Reinforced PTFE (Teflon), RPTFE, PEEK, Metal Seats (e.g., 17-4PH SS, Stellite) for high-temperature or abrasive services. Flow Capacity (Cv) Very high Cv values compared to same-size globe valves. Specific values depend on size and trim; consult sizing data. (e.g., a 3" SS-252B can have a Cv over 200). Rangeability High, typically 50:1 or greater. Leakage Class Soft Seat (PTFE): ANSI Class IV (bubble-tight) Metal Seat: ANSI Class V or Class VI (Fire-tested designs available) Actuator Options Pneumatic: Double-acting or spring-return piston actuators (e.g., with 1061P or 1066P actuator). Electro-Hydraulic: The Design EH option provides high thrust for precise digital control. Accessories Positioners, limit switches, solenoid valves, supply pressure regulators, etc.