Introduction & operating valves
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This document is a course outline on operating valves, covering their purpose, types, and maintenance. It details various valve types such as gate, globe, butterfly, and ball valves, as well as manual and control valves. Additionally, it provides instructions for maintaining and troubleshooting valve equipment.
Introduction & operating valves
- 1. Introduction & Operating valves Petroskill course Hector Nguema Ondo Perez
- 2. Valves Overview Purpose of valves Control rate flow Vary direction flow CONTENTS Type of valves – Gate valves – Throttling valves – On/Off valves – Gauge glass valves Manual/control Valves – Different between manual /control valves – Type of actuators. Maintaining valves Operating valves
- 3. Type of valves A gate valve stops flow by placing a metal gate across the pipe Solid wedge gate Parallel disc and wedge gate Solid split gate Gate valves Producing a pressure drop or turbulence
- 4. Type of valves Globe valves Butterfly valves Throttling valves Diaphragm valves Plug disc Composition disc Conventional disc
- 5. Type of valves Plug Valves Ball valves ON/OFF valves Swing Check valves Lift Check valves
- 6. Type of valves Gauge Glass valves • Make sure the valve is completely closed by turning the handle clockwise as far as possible. • Open the valve approximately 3/4 of a turn • Fully open the lower and upper block valves that isolate the gauge glass system from the process fluids. • Wait for the level of fluid in the gauge glass to stabilize. When the level in the gauge glass has stabilized, slowly open the valve as far as it will go. • Finally, turn the valve handle one full turn clockwise.
- 7. Manual / control valves Manual valves Easier to troubleshoot Control valves Different between a manual and control valves
- 8. Manual / control valves Type of actuators
- 9. Maintaining valve equipment Use of wrenches Lubricating valves Maintaining Packing
- 10. Operating Valves Troubleshooting Equalizing pressure Controller troubleshooting Valve repair Stem Bushing Repair