Safety Valve Quiz

What is a safety valve primarily used for?

• Controlling the flow of liquids

• Releasing excess pressure in a system

• Measuring temperature

• Filtering impurities

Which type of safety valve is a specialized type of pressure safety valve?

• Deadweight lever valve

• Pilot-operated relief valve

• Direct spring valve

• Salter spring balance valve

What was the earliest and simplest safety valve used on?

• A 1828 locomotive

• A 1679 steam digester

• A 1707 steam pump

• A 1803 stationary engine

Who invented the tamper-proof spring safety valve in 1856?

• Richard Trevithick

• Timothy Hackworth

• Denis Papin

• John Ramsbottom

What is the main function of a thermal relief valve?

• Providing protection from excess pressure caused by thermal expansion

• Controlling the flow of gas

• Measuring the temperature of liquids

• Filtering impurities from steam

What is the difference between a PRV and a PSV?

• PSVs have a manual lever to open the valve in case of emergency

• PRVs are used for liquids only

• PSVs are used for gases only

• PRVs are more expensive than PSVs

What is a vacuum safety valve used for?

• Measuring the pressure of gases

• Filtering impurities from steam

• Controlling the flow of liquids

• Preventing a tank from collapsing while it is being emptied

What is the purpose of a 'pop' valve?

• To control the flow of gas

• To filter impurities from steam

• To open quickly and vent fluid rapidly

• To measure the temperature of liquids

Which safety valve design was invented by Timothy Hackworth?

• Ramsbottom safety valve

• Direct spring valve

• Deadweight lever valve

• Salter spring balance valve

What is the main characteristic of a Salter spring balance valve?

• It acts as both a safety valve and a pressure gauge

• It is sensitive to sudden accelerations

• It is tamper-proof

• It uses a weight to retain steam pressure