Specifications: Valve Size: 2" to 16" (DN 50 to DN 400) Pressure Class: ANSI 150, 300 End Connections: Wafer, Lugged, Double Flanged Temperature Range: -40° to 400°F (-40° to 204°C) [Dependent on seat material] Performance & Flow Characteristics: Shut-Off Class: ANSI Class VI (Bubble-tight) Flow Characteristic: Equal Percentage (inherent, characterized by the disc notch) Rangeability: Up to 100:1 Flow Coefficient (Cv): Very high Cv for its size. Specific values are determined by valve size and disc notch characterization. Pressure Recovery: High, similar to a butterfly valve. Leakage: ANSI FCI 70-2 Class VI. Materials of Construction: Body: Ductile Iron (standard), Carbon Steel (WCB), Stainless Steel (CF8M/316) Disc: 316 Stainless Steel (standard), with optional hard coatings (e.g., Stellite, Colmonoy) for abrasive service. Shaft: 17-4PH Stainless Steel (standard) Seat Rings: Resilient materials such as PTFE (TFE), RPTFE, UHMW-PE, and PEEK to handle various temperatures and chemical compatibilities. Actuator & Accessories: Actuator Types: Compatible with all Fisher rotary actuators. Pneumatic: Spring-and-Diaphragm Actuators (for modulating control), Piston Actuators (for on/off or high-performance modulating). Electric: Electric Motor Actuators. Positioner: A Fisher FIELDVUE™ DVC digital positioner is highly recommended for precise modulating control and to take full advantage of the valve's characterized performance and diagnostic capabilities. Accessories: Limit switches, solenoid valves, filter regulators, etc.
