IND-PTV - Control Valves

The video tutorial explains the functioning of valve actuators, which move valves to desired positions using external power sources like pneumatics, electronics, or hydraulics. It details pneumatic actuators, which use air pressure for linear or rotary motion, and electric actuators, which convert electricity to mechanical energy. Hydraulic actuators, using pressurized fluid, are also discussed for their speed and power. The tutorial covers different types of actuators, their mechanisms, and methods of operation.

What is the primary function of a valve actuator?

• To generate electricity

• To move a valve to a desired position

• To cool down the system

• To increase air pressure

Which type of motion do diaphragm actuators primarily support?

• Rotary motion

• Linear motion

• Circular motion

• Oscillating motion

What is a key characteristic of a vane actuator?

• It requires no external power source

• It is used for linear motion

• It works only with rotary motion

• It uses a spring to operate

In an air-to-open, spring-to-close pneumatic actuator, what happens when the air system is down?

• The valve opens by spring force

• The valve closes by spring force

• The valve remains closed

• The valve remains open

What does an electric actuator convert?

• Mechanical energy to electrical energy

• Pneumatic energy to mechanical energy

• Electrical energy to mechanical energy

• Hydraulic energy to electrical energy

What is a significant advantage of hydraulic actuators over pneumatic actuators?

• They produce greater torque

• They are easier to maintain

• They are more energy-efficient

• They are quieter

How do hydraulic actuators move mechanical components?

• By using a magnetic field

• By using compressed air

• By using an electric motor

• By using a pressurized fluid