•  Print

Control valves are imperative elements in any system where fluid flow must be monitored and manipulated. A complete control valve is made of the valve itself, an actuator, and, if necessary, a valve control device. The actuator is what provides the required force to cause the closing part of the valve to move and the valve control devices keep the valves in the proper operating conditions; they can ensure appropriate position, interpret signals and manipulate responses.

This course provides an overview of control valve with emphasis on the sizing and selection. Selection of the proper valve involves a thorough knowledge of the process for which it will be used. When implementing a control valve into a process, one must consider not only the appropriate type of valve and its material of construction, but also the correct sizing to ensure it performs its designated task without any adverse occurrences in the system.

Extensive course materials provided contained useful information about valves sizing and selection. The candidates will gain a thorough understanding of control valves, actuators and positioner designs and their applications. The course, also, provides methods that can be used to identify specific valve problems and arrive at acceptable solutions within engineering tolerance.

By the end of this course delegates will learn about:

· Compare various types of final control elements

· Understand a typical valve operation in a control loop

· Differentiate between various types of valves and the benefits of each

· Learn how to evaluate and apply actuators and positioners for specific applications

· Understand the basic hydraulics and the relationship between the Cv, flow rate and pressure drop

· Learn how to size valves for any flow condition likely to be found in a process plant

· Learn how to select the proper valve characteristic for a given process

· Understand how the installed characteristics can match closely to the inherent characteristics

· Know the methods to address system performance issues such as cavitation, flashing and chocked conditions

· Understand the factors influencing the selection of control valves

· Compare rising stem to rotary style valves

· Analyze a control system to determine control valve needs

· Use ISA standards for control valve specification and selection

· Size valves for any flow condition likely to be found in a process plant

· Evaluate and select actuators for specific applications

· Specify appropriate auxiliaries including positioners and I/P transducers

· Design control valve installations that are safe and trouble-free

Instrumentation and Control Engineers & Technicians, Mechanical Engineers & Technicians, Projects Engineers, Operation Engineers, Process and Utility Supervisors and Technical Supervisory personnel involved in Sizing, Selecting and Applying Process Control Valves

· Introduction

o Valve in Loop

o Actuator

o Positioner

· Basic Valve Types

o Globe Valves

o Ball Valves

o Plug Valves

o Butterfly Valves

· Actuators

o Spring/Diaphragm

o Piston

o Vane

o Scotch-Yoke

o R & P

· Comparison

o Rising Stem

o Rotary Stem

o Accessories

o Positioner

o I/P Converters

· Valve Performance

o Gain

o Time

o Trim

o Special Needs

· Flashing, Cavitation & Noise

o Cause/Effect

o Prevention

o OSHA

o Source and Abatement

· Installation, Performance, Safety & Others

· Valve Sizing

o Valve sizing calculation Manual

o Valve Sizing calculation Computer

o Specification and Selection

o Process Requirements

o Other Considerations

· Maintenance & Troubleshooting Considerations

o Special Requirements

o Diagnostic Tools

· Smart Valves

o Available Designs

o Applications in Industry

· Test Valves to Evaluate Performance Factors

· Size Valves Manually and with Software

· Specify Valves, Actuators and Auxiliaries for Specific Applications

· Evaluate Operation of Valves with Pneumatic Actuators and Positioners

· Smart Valve and Positioner Operation Demonstration