Key Parameters (English) The following are typical technical parameters for the Fisher 627W and 627WH Control Valves. Category Parameter Description / Typical Values Valve Body & Size Valve Body Style Top-guided, single-port, cage-style globe valve. Size Range 1 inch (DN25) to 12 inches (DN300). End Connections Flanged (ANSI Class 150 to 2500), Butt-weld, Socket-weld. Pressure & Temperature Pressure Rating ANSI Class 150 to Class 2500. Temperature Range Standard: -350°F to +1100°F (-212°C to +593°C) with appropriate materials and packing. Flow & Trim Flow Characteristics Linear, Equal Percentage, Quick Opening (defined by the cage). Flow Coefficient (Cv) A wide range of Cv values available based on trim size and type. Trim Types Standard, Whisper Trim® (for noise control), Cavitrol® (for cavitation control), Hardened Trim (for erosion control). Leakage Class Leakage Class ANSI/FCI 70-2 Class IV (standard metal seat). Class V or Class VI with special lapping or soft seats. Materials Body Materials Carbon Steel (WCB), Stainless Steel (CF8M), Alloy Steel (WC9), Duplex Stainless Steel. Trim Materials Stainless Steel, Stellite, 17-4PH, Alloy 6. Actuator Actuator Type Typically paired with a Fisher 657/667 Diaphragm Actuator or a piston actuator for high-thrust requirements.
