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We discuss equipment parameters, flow media states, applications, preliminary sizing calculations, control valve selection, and re-performing the sizing calculation to confirm the selection. Webinar; Control Valve Flow Characteristics
Fisher® regulators and valves have traditionally been sized using equations derived by the company. There are now standardized calculations that are becoming accepted world wide. Some product literature continues to demonstrate the traditional method, but the trend is to adopt the standardized method.
control valve is a power operated device capable of modulating flow at varying degrees between minimal flow and full capacity in response to a signal from the controlling system. Control valves may be broadly classified by their function as “on-off” type or “flow regulating” type.
SECTION 2 VALVE SIZING PROCEDURE Introduction .....2‐1 Sizing Valves for Liquids .....2‐1 Liquid Sizing Sample Problems .....2‐8 Sizing Valves for Compressible Fluids .....2‐12
Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators, positioners and more. Design of Control and Safety Valves Sizing and dimensions of control valves & equipment in steam and condensate systems.
This handbook on control valve sizing is based on the use of nomenclature and sizing equations from ANSI/ISA Standard S75.01.01 and IEC Standard 60534-2-1. Additional explanations and supportive information are provided beyond the content of the standards.
Selecting a properly sized control valve is essential to achieving the highest degree of process control for the liquid, gas, or multi-phase fluid. To ensure accuracy, use the following information for control valve sizing:
INTRODUCTION. Valtek uses a systematic method for selecting body types, sizes, materials, pressure ratings and trim sizes based on flow characteristics. Valtek control valve flow capacity (C v) is based upon the industry standard, ANSI/ISA S75.01.
Selecting a properly sized control valve is essential to achieving the highest degree of process control for the liquid, gas or multi-phase fluid. To ensure accuracy, use the following information for control valve sizing:
Modern valve sizing software is easy to use, especially when referenced to specific models of control valve sold by that manufacturer, and is able to account for a diverse multitude of factors affecting proper sizing.