LXR Unit 6 Module 6.1

What is the function of a valve?

• Used to start/stop/restrict/control the flow

• Used to start/stop the flow

What type of valve requires the hand wheel or motor to complete several revolutions to open or close the valve?

• Quater-turn valve

• Multi-turn valve

Which of the following are common multi-turn valves use in Saudi plants?

• Gate/Globe/Diaphragm

• Gate/Globe/Check valve

What type of valve is used for isolation?

• Globe valve

• Gate valve

What type of valves are classed as control valves?

• Globe/Diaphragm valve

• Gate/Diaphragm valve

What type of valve is used to start or stop flow and throttle-control amount of flow?

• Globe valve

• Plug valve

What type of valve operates much faster to close than multi-turn valves?

• Self-Actuated valve

• Quarter-turn valve

What type of valve permits flow in one direction only?

• Non-return/Check valve

• Gate/Globe valve

What are relief valves classed as?

• Installation devices

• Safety devices

What are the function of a unclassified drain valve?

• Drain out liquids from a pipeline

• Redirect liquids from a pipeline