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CHAPTER 6: INDUSTRIAL VALVES - Coggle Diagram
CHAPTER 6: INDUSTRIAL VALVES
FUNCTION
SHUT-OFF VALVES
Block valves
To close off the flow
Control Valves
To regulate flow
INTRODUCTION
one of the most vital instrument in the industry
Mechanical device that usedto control the flow of fluids.
ON-OFF SERVICES
GATE VALVE
Open: Gate is raised completely out of the flow line.
Low resistance
Closed: Gate is placed across the pipe’s opening.
PLUG VALVE
Made out of a solid piece that has as opening through it
Provide very little restriction
BALL VALVE
Has an opening/port
Shouldn’t be used for throttling services
THROTTLING SERVICE
GLOBE VALVE
The flow path changes in direction
higher pressure drop caused by change of flow
use for services that require frequent valve operation
BUTTERFLY VALVE
Adjusted by changing the angle of the disc
Smaller than the other valves
operated at
a)low temperature
b) low pressure.
CHECK VALVE
Swing Check Valve
A hinged disc that slams shut when flow reverses
Lift Check Valve
A disc that rests on the seat when flow is idle and lifts when is active
Ball Check Valve
Ball-shaped disc that rest on the seat