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14 - MMS - Mechanical Engineering and Material Sciences

MMS 115 - Valves Operation and Maintenance

Code Start Date Duration Venue
MMS 115 23 October 2023 5 Days Istanbul Registration Form Link
MMS 115 18 December 2023 5 Days Istanbul Registration Form Link
Please contact us for fees


Course Description

Power plant and other petrochemical industries do deal with different types of valves. All piping systems are fitted with valves for controlling purposes or safety requirements. Understanding the function of each valve type will have an important reflection on the process quality, equipment and plant reliability along with the economics of the whole activity. Different application needs to select the appropriate valve type of a particular flow characteristic. Operation with the valve also affects the system and the process. Understanding the problems associated with valves is essential for diagnosis and troubleshooting and the needed maintenance of the particular type of valves. 

Course Objectives

  • Understanding of different parameters affecting the operation of valves
  • Being able to select the right valve for the particular application
  • Being able to perform the necessary calculation for valve sizing
  • Understanding the problems associated with valves like flashing, slamming and water hammer
  • Being able to perform troubleshooting of systems involving valves
  • Being able to decide on the right maintenance plan concerning different types of valves 

Who Should Attend?

  • Those who aspire to increase their knowledge in this field
  • Maintenance officers
  • Technicians of mechanical, electrical and chemical engineering
  • Engineers

Course Details/Schedule

Day 1

  • Basics of the Valve Technology
  • Valves Technology
  • Types of Valves
  • Valves Characteristics
  • Sealing Performance
  • Leakage Criterion
  • Leakage Classifications
  • Sealing Mechanisms
  • Valve Stem Seals
  • Flow Characteristics
  • Flow Through Valves
  • Valve Flow Characteristics
  • Linear & Equal %

Day 2

  • Manual vs. Automatic Valves
  • Manual Valves
  • Functions of Manual Valves
  • Methods of Regulation
  • Valve Types: Stopping / Starting Valves & Control Valves
  • Valve and Connections
  • Valves Rating
  • Valves Seating
  • Types of Manual Valves: Gate Valves, Plug Valves, Ball Valves, Butterfly Valves, Pinch Valves, and Diaphragm Valves
  • Check Valves
  • Applications
  • Types of Check Valves
  • Lift Check Valves
  • Swing Check Valves
  • Tilting – disc Check Valves
  • Diaphragm Check Valves
  • Check Valves Operation
  • Selection of Check Valves

Day 3

  • Relief and Safety Valves: Function and Operation
  • Relief and Safety Valves
  • Relief Valve Types
  • Pressure – relieving Devices
  • Automatically operated Valves
  • Direct – acting and Piloted Pressure Relief Valves
  • Modulating, Full – Lift, and Ordinary Pressure Relief Valves
  • Valve Loading
  • Safety Valves
  • Operation of Rupture Discs

Day 4

  • Valves Problem and Troubleshooting
  • High Pressure Drop
  • Pressure Recovery Characteristics
  • Cavitation in Valves
  • Incipient and Choked Cavitation
  • Flow Curve Cavitation Index
  • Cavitation – Elimination Devices
  • Flashing vs. Cavitation
  • Flow Choking
  • High Velocities
  • Water Hammer
  • What causes water hammer?
  • Water Hammer Calculations
  • Solutions of Water Hammer
  • Surge Protection
  • Check Valve Slamming
  • Noise Problems
  • Clean Air Standards
  • Life Loading
  • Packing for Fugitive-emission Control
  • Troubleshooting and Control Valves
  • Control Valves and Actuators
  • Control Valves Types
  • Linear Valve Features
  • Rotary Valve Features
  • Control Valve Flow Characteristics
  • Quick Opening Characteristics
  • Linear & Equal %
  • Actuation Systems
  • Types of Actuators
  • Pneumatic piston Actuator
  • Electric Motors
  • Electrohydraulic Actuators
  • Actuator Performance
  • Valve Positioner
  • Operation of Positioners
  • Positioner Calibration

Day 5

  • Valve Sizing and Selection
  • Valve-sizing Criteria for Manual Valves
  • Valve-sizing criteria for Check Valves
  • Valve-sizing Criteria for Throttling Valves
  • Incipient and Advanced Cavitation
  • Terminal Pressure Drop Ratio
  • Percent of Flashing
  • Pressure Recovery Coefficient
  • Valve Sizing & Selection Procedure
  • Selecting a Valve Type
  • Different Valves Characteristics
  • Examples