Valves Operation & Maintenance

Valves have many uses, including controlling water for irrigation, industrial uses for controlling processes, residential uses such as on/off and pressure control. A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, solids, or slurries) by opening, closing, or partially obstructing (throttling). Valves are technically fittings, but are usually discussed as a separate category. The word is derived from the Latin valva, This Course address a detailed knowledge of valves Describe its :, principals , Glossary ,Terminologies, operation, maintenance (corrective, preventive, predictive) , overhauling criteria , acceptance testing and troubleshooting

Audience

This course is designed for:

Mechanical engineers
Process engineers
Maintenance Engineers
Supervisors from different disciplines

Course objectives

By end of the course participants will gain:

Valves different functions and applications
Clarify various types of valves
Identify all common valves components and their functions
Identify difference between linear motion valves & quarter turn valves
Describe operating principles of various types of valves
Explain non return valves(check valves)
How to use appropriate tools to maintain valves
Explain assembly and disassembly criteria of valves
Implementing elements of valve Maintenance rules
Demonstrate valve test & setup
Recognize and respond to valves abnormal condition and take relevant remedy
Know common valves terminologies
Be familiar with Items found in nameplates & bridge wall marking of valves
Automatic valves and their assistive devices
Learn how to deal with Troubleshooting and repairing activities of valves
Learn Preventive maintenance for valves
Learn Testing for valves according to API 598

Course contents

Day-1

Pretest
Function of valves
What are controlling parameters for valves?
What are different actuators types for valves?
Linear motion & quarter turn valves
What does valve sizing refer to?
Valves terminologies

Day-2

Valves different types
Application for each valve types
Application for each valve types
What are the main components of valves ?
Normally close valve and normally open valve mean ?
Valve cavitation & flashing
Valve coff. Of flow Cv and it’s equation

Day-3

PRV valves & Application examples
Valves ends Different types
Disassembly & assembly of valves components
Stem rising & Non stem rising valves
Solid wedge & Flexible wedge &split wedge gate valves
Comparison between features of gate valves & globe valves
What is difference between Full Bore Valve and Reduced Bore Valve & When to use

Day-4

Advantage and disadvantage for each valve type
On / off valves and throttling valves
Valves greasing
Corrective maintenance & preventive maintenance for valves
Static seal and dynamic seals at valves
Data found on nameplate & Bridge wall marking of valves
One Piece, multi Pieces Ball Valves Features & Differences

Day-5

Trunnion and floating ball valves
Lift, wafer & swing check valves applications
Lug type & wafer type butterfly valves
Material of construction (MOC) of the valves
Low pressure Closure test & high pressure closure test on Valves
Inspection of valves according to API 598
Shell test on valves
Data for valves and meaning
Plug & diaphragm valves
Posttest

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