Explore over top 80 valve questions and answers about valve types, operation, and maintenance in various industrial applications.
Valve Questions
Watch the valve video to understand the explanations for the given questions.
Question 1
What is a Rotary Valve?
A. A valve with a sliding gate for quick on/off control
B. A valve that moves linearly to control flow rate
C. A valve with a rotating disc for flow control
D. A valve that operates by rotating a closure element
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A valve that operates by rotating a closure element
Question 2
What is a Side Entry Ball Valve?
A. A ball valve accessed through the top for maintenance
B. A ball valve that stops movement from the top
C. A ball valve with a body split into two or more pieces
D. A ball valve with a single-piece body
Show the Answer
A ball valve with a body split into two or more pieces
Question 3
What is a Quick Exhaust Valve?
A. A valve specially designed to operated the valve slowly
B. A valve that controls the flow of gases without using any type of air medium
C. A valve that rapidly exhausts air from a system
D. A valve that rapidly stores air from a system
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A valve that rapidly exhausts air from a system
Question 4
What is a Manual Valve?
A. A valve operated by PLC
B. A valve operated by hand
C. A valve operated by air
D. A valve that regulates flow based on temperature
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A valve operated by hand
Question 5
What is a Poppet Valve?
A. A valve with a poppet to change the flow direction
B. A valve with a poppet to control the process temperature
C. A valve with a movable poppet that lifts to open and seats to close
D. A valve with a fixed poppet that lifts to open and seats to close
Show the Answer
A valve with a movable poppet that lifts to open and seats to close
Question 6
What is a Top Entry Ball Valve?
A. A ball valve with a split body design
B. A ball valve with a fixed ball supported by trunnions
C. A ball valve that allows maintenance from the top
D. A ball valve that stops movement from the top
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A ball valve that allows maintenance from the top
Question 7
What is a Sample Valve?
A. A valve that controls fluid mixing in a tank
B. A valve that isolates the two process pipelines
C. A valve that collects samples from transmitters
D. A valve that allows for the collection of fluid samples
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A valve that allows for the collection of fluid samples
Question 8
What is a Full Port Valve?
A. A valve with a reduced internal diameter
B. A valve that allows full flow with no restriction
C. A valve with a increased internal diameter
D. A valve that allows half flow with no restriction
Show the Answer
A valve that allows full flow with no restriction
Question 9
What is an Orbit Valve?
A. A valve with a linear motion to open and close
B. A valve that seals with a flexible seat
C. A valve with a rotating motion to open and close
D. A valve with multiple ports for flow control
Show the Answer
A valve with a rotating motion to open and close
Question 10
What is a Tank Bottom Valve?
A. An automatic tank bottom valve for level control
B. A valve designed for draining tanks from control room only
C. A valve designed for pumping tanks at the bottom
D. A valve designed for draining tanks at the bottom
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A valve designed for draining tanks at the bottom
Question 11
What is an Angle Seat Valve?
A. A valve with an angled seat for quick and tight shutoff
B. A valve that operates at an no angle to the flow
C. A valve with an straight seat for quick and tight shutoff
D. A valve with an angled seat for slow and loose shutoff
Show the Answer
A valve with an angled seat for quick and tight shutoff
Question 12
What is a Multi-Port Ball Valve?
A. A ball valve with multiple actuators
B. A valve with a single flow path
C. A ball valve with multiple balls
D. A ball valve with multiple flow paths
Show the Answer
A ball valve with multiple flow paths
Question 13
What is a Floating Ball Valve?
A. A valve that seals with a rubber seat
B. A valve that operates under low pressure
C. A ball valve where the ball is free to move
D. A valve with a trunnion-mounted ball
Show the Answer
A ball valve where the ball is free to move
Question 14
What is an Equalizing Valve?
A. A valve that balances density between two points
B. A valve that balances temperature between two points
C. A valve that balances pressure between two points
D. A valve that is used in high-pressure systems only
Show the Answer
A valve that balances pressure between two points
Question 15
What is a Blowdown Valve?
A. A valve that regulates the flow of gases
B. A valve that maintains constant pressure
C. A valve that controls vacuum pressure
D. A valve used to remove sludge or sediment from boilers
Show the Answer
A valve used to remove sludge or sediment from boilers
Question 16
What is a Resilient Seated Valve?
A. A valve that controls flow using a bellows seal
B. A valve that allows full flow without restriction
C. A valve with a metal-to-metal sealing surface
D. A valve with a soft, flexible sealing surface
Show the Answer
A valve with a soft, flexible sealing surface
Question 17
What is a Hand Valve?
A. A valve that operated using solenoid and coil
B. A valve operated manually by hand
C. A valve operated using automatic devices
D. A valve that automatically closes in emergencies
Show the Answer
A valve operated manually by hand
Question 18
What is a Choke Valve?
A. A valve that restricts flow in oil and gas applications
B. A valve that prevents backflow of fluid
C. A valve with a bellow for control
D. A valve that changes direction by 90 degrees
Show the Answer
A valve that restricts flow in oil and gas applications
Question 19
What is a Balance Valve?
A. A valve that ensures uneven distribution of flow in a system
B. A valve that ensures less opening and more closing
C. A valve that ensures more opening and less closing
D. A valve that ensures even distribution of flow in a system
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A valve that ensures even distribution of flow in a system
Question 20
What is a Diverter Valve?
A. A valve that directs flow between two valves
B. A valve with a rotating disc for throttling flow
C. A valve that directs flow from one inlet to multiple outlets
D. A valve that controls pressure and temperature
Show the Answer
A valve that directs flow from one inlet to multiple outlets
Question 21
What is a Bellows Sealed Valve?
A. A valve that operates with a rotating disc
B. A valve with a bellows element to stop the flow
C. A valve with a hermetic seal using a bellows structure
D. A valve that regulates flow based on temperature
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A valve with a hermetic seal using a bellows structure
Question 22
What is a Throttle Valve?
A. A valve that is manually operated to start and stop flow
B. A valve that regulates flow by varying the opening size
C. A valve that uses a ball with a hole to control flow
D. A valve with a gate that fully opens or closes flow
Show the Answer
A valve that regulates flow by varying the opening size
Question 23
What is a Hydraulic Directional Control Valve?
A. A valve to control the hydraulic fluid pressure
B. A valve that directs hydraulic fluid to different paths
C. A valve uses pneumatic air to control the flow rate
D. A valve that directs hydraulic fluid to single path
Show the Answer
A valve that directs hydraulic fluid to different paths
Question 24
What is a Four-Way Valve?
A. A valve that uses four solenoid valves for the operation
B. A valve that admits air to prevent vacuum conditions
C. A valve that controls four pressure sources
D. A valve that controls flow between four different paths
Show the Answer
A valve that controls flow between four different paths
Question 25
What is a Ball Check Valve?
A. A valve with a rotating plug for flow control
B. A valve that uses a flexible diaphragm for sealing
C. A valve that uses a ball to prevent backflow
D. A valve that lifts to allow flow without using ball
Show the Answer
A valve that uses a ball to prevent backflow
Question 26
What is a Foot Valve?
A. A valve used in high-pressure systems
B. A valve that controls fluid direction in steam systems
C. A valve placed at the bottom of a pump suction line
D. A valve that uses a conical plug for shutoff
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A valve placed at the bottom of a pump suction line
Question 27
What is a Globe Valve?
A. A valve that uses a flexible diaphragm
B. A valve that controls flow through a rotating disc
C. A valve with a disk that slides across an orifice
D. A valve that uses a plug and seat design
Show the Answer
A valve that uses a plug and seat design
Question 28
What is a Double Block and Bleed Valve?
A. A valve with one sealing mechanisms to isolate fluid and two bleed ports
B. A valve that controls tank level using block and bleed valves
C. A valve with two sealing mechanisms to isolate fluid and a bleed port
D. A valve that controls pressure in tanks using block and bleed valves
Show the Answer
A valve with two sealing mechanisms to isolate fluid and a bleed port
Question 29
What is a Wafer Check Valve?
A. A thin, compact valve designed for heavy spaces
B. A thin, compact valve designed for tight spaces
C. A valve that uses a disc that swings open and closed
D. A valve with a piston that lifts to allow flow
Show the Answer
A thin, compact valve designed for tight spaces
Question 30
What is a Thermostatic Valve?
A. A valve that controls flow based on temperature
B. A valve that controls temperature based on flow rate
C. A valve that controls temperature based on pressure
D. A valve that controls flow based on pressure
Show the Answer
A valve that controls flow based on temperature
Question 31
What is a Gate Valve?
A. A valve that uses a sliding gate to control flow
B. A valve that operates with a rotating disc
C. A valve with a spherical disc controlling flow
D. A valve with a flexible diaphragm
Show the Answer
A valve that uses a sliding gate to control flow
Question 32
What is a Check Valve?
A. A valve that controls flow through a rotating disc
B. A valve that opens and closes by hand
C. A valve that prevents backflow of fluid
D. A valve with a needle-like stem for precise control
Show the Answer
A valve that prevents backflow of fluid
Question 33
What is a Tilting Disc Check Valve?
A. A valve with a rotating ball for flow control
B. A valve with a needle-like stem for precise control
C. A valve that uses a plug for shutoff
D. A valve with a disc that tilts to open and close
Show the Answer
A valve with a disc that tilts to open and close
Question 34
What is a Mixing Valve?
A. A valve that regulates flow between two outlets only
B. A valve that mixes two or more fluid streams
C. A valve that divides two or more fluid streams
D. A valve that controls pressure between four paths only
Show the Answer
A valve that mixes two or more fluid streams
Question 35
What is a Pressure Sustaining Valve?
A. A valve that maintains a minimum upstream temperature and pressure
B. A valve that maintains a minimum upstream pressure
C. A valve that controls flow in two directions using pressure
D. A valve that controls vacuum pressure
Show the Answer
A valve that maintains a minimum upstream pressure
Question 36
What is a V-Port Ball Valve?
A. A valve that diverts flow between six outlets
B. A ball valve operated using a V-shaped actuator for density control
C. A ball valve without a V-shaped notch for flow control
D. A ball valve with a V-shaped notch for flow control
Show the Answer
A ball valve with a V-shaped notch for flow control
Question 37
What is a Lift Check Valve?
A. A valve where the disc lifts horizontally to allow flow
B. A valve that prevents backflow with a swinging disc
C. A valve that uses a needle-like stem for flow control
D. A valve where the disc lifts vertically to allow flow
Show the Answer
A valve where the disc lifts vertically to allow flow
Question 38
What is a Venting Valve?
A. A valve that stores air or gas from a system
B. A valve that releases air or gas from a system
C. A valve that prevents air backflow
D. A valve that controls the temperature of a process
Show the Answer
A valve that releases air or gas from a system
Question 39
What is a Trunnion Ball Valve?
A. A valve with a floating ball for sealing
B. A ball valve where the ball is free to move
C. A valve with a trunnion-mounted ball
D. A ball valve with a fixed ball supported by trunnions
Show the Answer
A ball valve with a fixed ball supported by trunnions
Question 40
What is a Butterfly Valve?
A. A valve with a sliding gate for flow control
B. A valve that uses a plug to block the flow
C. A valve with a quarter-turn rotating disc
D. A valve with a flexible membrane for sealing
Show the Answer
A valve with a quarter-turn rotating disc
Valves Test
This valve test video provides the remaining quiz questions and answers with explanations.
Question 41
What is a Diaphragm Valve?
A. A valve with a sliding gate for flow control
B. A valve that prevents backflow of fluid
C. A valve with a flexible membrane for sealing
D. A valve with a rotating disc
Show the Answer
A valve with a flexible membrane for sealing
Question 42
What is a Three-Way Valve?
A. A valve that controls pressure in two directions
B. A valve that uses three solenoid valves for the operation
C. A valve that directs flow between three ports
D. A valve that controls three pressure sources
Show the Answer
A valve that directs flow between three ports
Question 43
What is a Stop Check Valve?
A. A valve that prevents backflow with a rotating disc
B. A valve with a flexible diaphragm for flow control
C. A valve that uses a ball to allow flow
D. A valve that combines a check valve and a stop valve
Show the Answer
A valve that combines a check valve and a stop valve
Question 44
What is a Y-Pattern Valve?
A. A valve with a stem that is angled at 45 degrees
B. A valve with a piston mechanism for flow control
C. A valve with a stem that is angled at 90 degrees
D. A valve that allows flow in one direction only
Show the Answer
A valve with a stem that is angled at 45 degrees
Question 45
What is a Motorized Valve?
A. A valve that uses solenoid coil for the operation
B. A valve operation based on the process flow
C. A valve operated by an electric motor
D. A valve operated by an instrument air
Show the Answer
A valve operated by an electric motor
Question 46
What is a Vacuum Relief Valve?
A. A valve that uses vacuum for controlling the pressure
B. A valve that maintains a minimum upstream pressure
C. A valve that uses vacuum for controlling the flow rate
D. A valve that admits air to prevent vacuum conditions
Show the Answer
A valve that admits air to prevent vacuum conditions
Question 47
What is a Piston Valve?
A. A valve that uses a diaphragm for flow control
B. A valve with a needle-like stem for precise control
C. A valve that uses a piston to control flow
D. A valve that prevents backflow of fluid
Show the Answer
A valve that uses a piston to control flow
Question 48
What is a Silent Check Valve?
A. A valve that uses a piston for flow control
B. A valve that uses a ball to regulate flow direction
C. A valve that prevents backflow without slamming
D. A valve that uses a rotating disc to control flow
Show the Answer
A valve that prevents backflow without slamming
Question 49
What is a Double Disc Check Valve?
A. A valve with a flexible diaphragm for sealing
B. A valve that uses a rotating ball to prevent backflow
C. A valve with one disc that open and close for flow control
D. A valve with two discs that open and close for flow control
Show the Answer
A valve with two discs that open and close for flow control
Question 50
What is a Diverting Valve?
A. A valve that controls pressure between four paths only
B. A valve that mixes fluids for temperature control
C. A valve that directs flow between different outlets
D. A valve that regulates flow between two outlets only
Show the Answer
A valve that directs flow between different outlets
Question 51
What is a Remote Operated Valve?
A. A valve that allows full flow rate restriction without using any actuator
B. A valve controlled from a distance using electrical, pneumatic, or hydraulic means
C. A valve controlled manually via an actuator
D. A valve operated using push buttons and handwheels only
Show the Answer
A valve controlled from a distance using electrical, pneumatic, or hydraulic means
Question 52
What is a Severe Service Valve?
A. A valve designed for low pressure and temperature
B. A valve designed for extreme temperature conditions only
C. A valve designed for extreme pressure conditions only
D. A valve designed for extreme pressure and temperature
Show the Answer
A valve designed for extreme pressure and temperature
Question 53
What is a Hydraulic Valve?
A. A valve that lifts to prevent backflow
B. A valve with a disc that swings open and closed
C. A valve that rotates to allow flow control
D. A valve used to control hydraulic fluid flow
Show the Answer
A valve used to control hydraulic fluid flow
Question 54
What is a Knife Gate Valve?
A. A valve with a sharp-edged gate that cuts through solids or slurry
B. A valve that cuts through thin media to change the flow direction
C. A valve that cuts through thin media to stop flow
D. A valve with a ball that cuts through solids or slurry
Show the Answer
A valve with a sharp-edged gate that cuts through solids or slurry
Question 55
What is an Angle Valve?
A. A valve that changes the direction of flow by 180 degrees
B. A valve that is used for high-temperature applications only
C. A valve that controls the flow through a straight path
D. A valve that changes the direction of flow by 90 degrees
Show the Answer
A valve that changes the direction of flow by 90 degrees
Question 56
What is a Triple Offset Butterfly Valve?
A. A valve with three ports for flow diversion
B. A valve with three offsets for tight sealing
C. A valve with a single offset for control
D. A valve with three ports for flow mixing
Show the Answer
A valve with three offsets for tight sealing
Question 57
What is a Metal Seated Valve?
A. A valve with a metal-to-metal sealing surface
B. A valve with a plastic sealing surface
C. A valve with a soft, flexible sealing surface
D. A valve with a rubber-to-metal sealing surface
Show the Answer
A valve with a metal-to-metal sealing surface
Question 58
What is a Tank Vent Valve?
A. A valve that decreases the storage tank pressure
B. A valve that increases the storage tank pressure
C. A valve that allows air in and out of a storage tank
D. A valve that controls the direction of gases
Show the Answer
A valve that allows air in and out of a storage tank
Question 59
What is a Solenoid Valve?
A. A valve that uses a piston for flow control
B. A valve controlled by pneumatic pressure only
C. A valve operated by electromechanical devices
D. A valve that is manually operated
Show the Answer
A valve operated by electromechanical devices
Question 60
What is a Control Valve?
A. A valve used to prevent backflow only
B. A valve that regulates fluid flow in a system
C. A valve that changes the direction of flow only
D. A valve that is manually operated only
Show the Answer
A valve that regulates fluid flow in a system
Question 61
What is a Sleeve Plug Valve?
A. A valve with a floating plug for sealing
B. A plug valve without a lubricated sleeve for sealing
C. A plug valve with a lubricated sleeve for sealing
D. A valve that operates two ports simultaneously
Show the Answer
A plug valve with a lubricated sleeve for sealing
Question 62
What is a Lined Valve?
A. A valve with an internal lining for corrosion resistance
B. A valve without an external lining for corrosion resistance
C. A valve without an internal lining for corrosion resistance
D. A valve with an external lining for corrosion resistance
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A valve with an internal lining for corrosion resistance
Question 63
What is a Float Valve?
A. A valve that prevents the backflow of fluids using float
B. A valve that controls flow based on the position of a floating element
C. A valve that mixes fluid streams based on the floating element size
D. A valve that controls the process temperature using float switch
Show the Answer
A valve that controls flow based on the position of a floating element
Question 64
What is an Axial Flow Valve?
A. A valve that operates by rotating a closure element
B. A valve that controls flow with a rotating element
C. A valve with a flow path that runs parallel to the axis of the valve body
D. A valve with a rotating disc for throttling flow
Show the Answer
A valve with a flow path that runs parallel to the axis of the valve body
Question 65
What is a Swing Check Valve?
A. A valve that controls flow with a flexible diaphragm
B. A valve with a hinged disc that swings to prevent backflow
C. A valve with a rotating plug for shutoff
D. A valve that uses a piston to control flow
Show the Answer
A valve with a hinged disc that swings to prevent backflow
Question 66
What is a Reduced Port Valve?
A. A valve with a increased internal diameter
B. A valve that allows zero flow with no restriction
C. A valve with a smaller internal diameter
D. A valve that allows full flow with no restriction
Show the Answer
A valve with a smaller internal diameter
Question 67
What is a Multi-Turn Valve?
A. A valve that requires multiple valves to control flow rate
B. A valve that uses series of valves to control the flow rate
C. A valve that requires multiple turns to open or close
D. A valve that requires single turn to open or close
Show the Answer
A valve that requires multiple turns to open or close
Question 68
What is a Safety Valve?
A. A valve that controls the flow of liquids under normal conditions
B. A valve used to control temperature
C. A valve designed to open automatically under high pressure
D. A valve that stops backflow of fluid
Show the Answer
A valve designed to open automatically under high pressure
Question 69
What is a Cryogenic Valve?
A. A valve used for extremely high-pressure applications
B. A valve used for extremely low-temperature applications
C. A valve used for extremely high-temperature applications
D. A valve used for extremely low-pressure applications
Show the Answer
A valve used for extremely low-temperature applications
Question 70
What is a Tandem Valve?
A. A valve that operates two ports simultaneously
B. A valve with a floating ball for sealing
C. A valve with two separate valve mechanisms in parallel
D. A valve with two separate valve mechanisms in series
Show the Answer
A valve with two separate valve mechanisms in series
Question 71
What is a Pinch Valve?
A. A valve with a rotating plug for quick shutoff
B. A valve that uses a sliding gate to regulate flow
C. A valve that controls flow by pinching a tube
D. A valve with a flexible diaphragm for sealing
Show the Answer
A valve that controls flow by pinching a tube
Question 72
What is a Plug Valve?
A. A valve used for backflow prevention
B. A valve with a cylindrical or conical plug
C. A valve that uses a flexible diaphragm for control
D. A valve that uses a sliding gate to control flow
Show the Answer
A valve with a cylindrical or conical plug
Question 73
What is a Needle Valve?
A. A valve with a quarter-turn spherical disc
B. A valve that prevents backflow of fluid
C. A valve that allows unidirectional flow
D. A valve with a needle-like stem for precise control
Show the Answer
A valve with a needle-like stem for precise control
Question 74
What is a Pressure Relief Valve?
A. A valve that opens automatically to relieve excess pressure
B. A valve with a plug that rotates for flow control
C. A valve that opens automatically to relieve normal pressure
D. A valve used for precise metering of flow
Show the Answer
A valve that opens automatically to relieve excess pressure
Question 75
What is a Proportional Valve?
A. A valve that maintains constant upstream pressure and temperature
B. A valve that controls flow in proportion to process density
C. A valve that controls flow in proportion to an input signal
D. A valve that controls pressure in proportion to process temperature
Show the Answer
A valve that controls flow in proportion to an input signal
Question 76
What is a Ball Valve?
A. A valve that uses a sliding gate to control flow
B. A valve with a flexible diaphragm
C. A valve with a spherical disc controlling flow
D. A valve used to regulate high-pressure steam
Show the Answer
A valve with a spherical disc controlling flow
Question 77
What is a Spring-Loaded Check Valve?
A. A check valve that uses a spring to close the valve quickly
B. A check valve that uses a spring to close the valve slowly
C. A valve with a needle-like stem for precise control
D. A valve that rotates to allow or block flow
Show the Answer
A check valve that uses a spring to close the valve quickly
Question 78
What is an Expansion Valve?
A. A valve that controls tank level and temperature
B. A valve that controls flow rate of instrument air
C. A valve that controls very low pressure applications
D. A valve that controls refrigerant flow in HVAC systems
Show the Answer
A valve that controls refrigerant flow in HVAC systems
Question 79
What is a Cartridge Valve?
A. A valve that directs fluid to multiple outlets
B. A valve installed as a self-contained unit within a manifold
C. A valve with a rotating ball for quick on/off control
D. A valve with a flexible diaphragm for pressure control
Show the Answer
A valve installed as a self-contained unit within a manifold
Question 80
What is an Emergency Shut-Off Valve?
A. A valve with a diaphragm for precise adjustments
B. A valve that closes rapidly to isolate a system in an emergency
C. A valve that stops working in emergency conditions
D. A valve that manually closes in emergencies
Show the Answer
A valve that closes rapidly to isolate a system in an emergency
Question 81
What is a Linear Valve?
A. A valve that operates based linear flow rate
B. A valve with a rotating disc for flow control
C. A valve where the flow control element moves in rotation
D. A valve that operates with a linear motion to open or close
Show the Answer
A valve that operates with a linear motion to open or close
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