introduction & operating valves
TRANSCRIPT
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Introduction & Operating valves
Petroskill course
Hector Nguema Ondo Perez
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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
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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
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Type of valves
Globe valves Butterfly valves
Throttling valves
Diaphragm valves
Plug disc
Composition disc
Conventional disc
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Type of valves
Plug Valves Ball valves
ON/OFF valves
Swing Check valves Lift Check valves
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Type of valvesGauge 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.
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Manual / control valves
Manual valves Easier to troubleshoot
Control valves
Different between a manual and control valves
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Manual / control valvesType of actuators
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Maintaining valve equipment
Use of wrenches Lubricating valves Maintaining Packing
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Operating ValvesTroubleshooting
Equalizing pressure Controller troubleshooting
Valve repair
Stem Bushing Repair
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Thanks for coming
Any question?