CONTROL VALVE FOR TECHNICIAN

INTRODUCTION :

The most common final control element in the process control industries is the control valve. The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point.

Most of the people see for  control valves or valves are really referring to a control valve assembly. The control valve assembly typically consists of the valve body, the internal trim parts, an actuator to provide the motive power to operate the valve, and a variety of additional valve accessories, which can include petitioners, transducers, supply pressure regulators, manual operators, snubbers, or limit switches. In condition we must know how to operate and maintain control valve.

OBJECTIVE :

The participant able to known the operation and maintenance of  control valves, including  control valve performance,  valve and actuator types control valve accessories, control valve selection, special control valves, installation and maintenance and valve trouble shooting

MATERIAL TRAINING :

1. Introduction to Control Valves: Process Control Terminology, Sliding-Stem Control Valve Terminology, Rotary-Shaft Control Valve Terminology, Control Valve Functions and Characteristics Terminology.
2. Control Valve Performance: Dead Band, Actuator-Positioner Design, Valve Response Time, Valve Type And Characterization, Valve Sizing.
3. Valve and Actuator Types: Control Valves, Control Valve End Connections, Valve Body Bonnets, Control Valve Packing, Characterization of Cage-Guided Valve Bodies, Valve Plug Guiding, Restricted-Capacity Control Valve Trim, Actuators.
4. Control Valve Accessories: Positioners, Other Control Valve Accessories
5. Control Valve Selection: Valve Body Material, Designations for the High Nickel alloys, Pressure-Temperature Ratings for Standard Class, Face-to-Face Dimensions, Control Valve Seat Leakage Classifications, Control Valve Flow Characteristics, Valve Sizing, Non-Destructive Test Procedures, Cavitations and Flashing
6. Special Control Valves: High Capacity Control Valves, Low Flow Control Valves, High-Temperature Control Valves, Cryogenic Service Valves, Customized Characteristics and Noise Abatement Trims, Valves Subject to Sulfide Stress Cracking
7. Installation and Maintenance: Proper Storage and Protection, Proper Installation Techniques, Control Valve Maintenance, Actuator Diaphragm, Stem Packing, Seat Rings, Bench Set.

INSTRUCTOR

Dr. Ir. Viktor Malau, DEA / Ir. Endra Joelianto, PhD and Team