Technical Parameters Parameter Specification Product Name Fisher WhisperFlo™ Aerodynamic Trim Type Multi-Stage, Noise Attenuation Trim Primary Fluid Service Gases and Steam (Compressible Fluids) Noise Reduction Capability Typically 15 to 25 dBA (depending on initial pressure drop and valve size) Pressure Drop Capability Capable of handling very high pressure drops (ΔP), often in excess of 1000 psi. Compatible Valve Bodies Fisher easy-e™, G-Series, 1050/1051, and other cage-style globe valves. Trim Construction Cylindrical cage with multiple stages of perforated plates or stacked disks. Wetted Materials Stainless Steel (Standard), Alloy Steel Size Range Designed to fit valve sizes from 1" to 12" (DN 25 to DN 300) and larger. Temperature Limits Limited by the valve body, typically up to 800°F (427°C) or more. Flow Capacity (Cv) Varies by size and specific trim design. Provides a balanced Cv for its noise reduction class.
