Objectives

• Comprehend the inner operation of most commonly utilized valve types
• Decide on the best valve to use, for specific applications
• Determine the most cost-effective valve size
• Determine the best device to drive and operate an assortment of valves
• Get control valves to operate optimally in the field, using an assortment of techniques

Who Should Attend?

• Key instrumentation personnel involved in valve maintenance
• Senior management and staff responsible for valve and actuator selection
• The mechanical and electrical staff that come into contact with valves
• Process control engineers requiring a high plant availability, often affected by valves
• Designers, industrial engineers, and staff responsible for plant safety
• All personnel with a vested interest in applications that require/utilize valves

Course Outline:

DAY 1

Valve Principals, Purposes, Types, Control Signals, and Flow Conditions

• Valve Principles, Valve Purposes, and Control Signals used with Valves
• Flow Conditions in and around Valves
• Reynolds Numbers
• Cavitation and Flashing and How This Influences Valve Selection
• Associated Equipment to Valves
• Definitions and Principles of Operation of the Major Types of Valves

DAY 2

Valve in P&IDs, Leakage, Valve Characteristics, and Valve Size Calculations

• Continuation of the Definitions and Principles of Operation of more Major Types of Valves
• Additional associated Equipment – Pertinent with Valves
• P&ID Diagrams associated with Valves
• Valve Leakage and Valve Leakage Rate Calculation
• Valve Inherent Characteristics and their importance once installed
• Performing Manual Calculations – for Valve Sizing

DAY 3

Valve Software, Actuators, Positioners, Cavitation & Noise Control & SIS

• Software Used to Size Control Valves
• Assorted Actuators and their Properties and Characteristics
• Valve Positioners
• Cavitation and Noise Control – in and around valves
• Valves and How They Fit into Pressure Relief and Safety Instrumented Systems (SIS)
• Using Digital Controllers – with valves

DAY 4

3-term Controllers and Loop-tuning for Processes Containing Control Valves

• Understanding and Implementing the Right Controller Action – for fail-safe valves
• Understanding all of the Variables – associated with three-term control
• Open Loop Tuning – for controllers that act on control valve loops
• Closed-Loop Tuning – for controllers that act on control valve loops
• Trial and Error Tuning – to optimize control valve performance

DAY 5

Using Valves in Cascade, Ratio, Dead-Time Dominant, Non-Linear and PLC-Controlled Processes

• Setting-up a Cascade Loop – using a single valve and multiple controllers
• Setting-up a Ratio Loop – using a Single Valve and Multiple Process Variables (PVs)
• Dead Time Dominant Loops – how this affects the valve performance, and how this is corrected
• Using a Control Valve in a process that exhibits different responses in different zones
• Combining PLCs – for valve control