Pipefitter Valves, Fittings, and Supports 4

Question 1

A spring-loaded safety relief valve is set to open at 150 psi. What happens if the system pressure drops back below 150 psi?

Accepted Answer

The valve reseats automatically due to spring force

Answer

Spring-loaded safety relief valves automatically reseat when system pressure drops below the set pressure, as the spring force closes the disc.

Question 2

Which type of pipe support is designed to allow controlled movement of a piping system in a specific direction while limiting movement in other directions?

Accepted Answer

Guided support

Answer

Guided supports constrain lateral or rotational movement while allowing axial movement in a designated direction.

Question 3

A socket weld fitting is typically used for pipe sizes up to:

Accepted Answer

3 inches

Answer

Socket weld fittings are generally used for small-bore piping up to 3 inches (DN 80) in high-pressure applications.

Question 4

What is the primary purpose of a check valve in a piping system?

Accepted Answer

To prevent backflow

Answer

Check valves allow flow in one direction only and automatically prevent reverse flow (backflow) in the system.

Question 5

Which fitting is used to connect two pipes of different diameters in a straight run?

Accepted Answer

Reducer

Answer

A reducer connects two pipes of different diameters in-line and can be either concentric or eccentric depending on alignment requirements.

Certified Pipefitter Practice Test

Certified Pipefitter Practice Test

Pipefitter Valves, Fittings, and Supports 4