FREE Certified Pipefitter Valves, Fittings, and Supports Questions and Answers

Question 1

A pipefitter is installing a valve in a high-pressure steam line where precise flow control and throttling are required. Which type of valve is best suited for this application?

Accepted Answer

Globe valve

Answer

Gate valve

Answer

Ball valve

Answer

Check valve

Question 2

In a steam piping system, what is the primary function of a steam trap?

Accepted Answer

To automatically discharge condensate and air while preventing steam loss

Answer

To filter out impurities from the steam

Answer

To increase the pressure of the steam

Answer

To regulate the temperature of the pipe

Question 3

Which of the following pipe fittings is specifically designed to create a 90-degree, integrally reinforced branch connection on a header pipe and is typically attached via a butt weld?

Accepted Answer

Weldolet

Answer

Socketweld Tee

Answer

Threadolet

Answer

Reducing Coupling

Question 4

A pipefitter needs to support a pipe elbow that extends beyond its nearest structural support point, creating a high-stress area. Which type of support is specifically designed to be welded directly to the elbow to transfer the load to a support member?

Accepted Answer

Dummy leg / Trunnion

Answer

Riser clamp

Answer

U-Bolt

Answer

Adjustable pipe saddle

Question 5

When selecting materials for a high-temperature, high-pressure steam service line, which ASTM specification for seamless carbon steel pipe is most commonly used?

Accepted Answer

ASTM A106 Grade B

Answer

ASTM A53

Answer

ASTM A312

Answer

ASTM A403

Question 6

A piping system requires a support that can absorb vibration and reduce noise transmission. Which type of pipe clamp would be the most suitable choice?

Accepted Answer

Cushioned or Lined Clamp

Answer

Standard U-Bolt

Answer

Saddle Clamp

Answer

Riser Clamp

A pipefitter is installing a valve in a high-pressure steam line where precise flow control and throttling are required.Which type of valve is best suited for this application?

A pipefitter is installing a valve in a high-pressure steam line where precise flow control and throttling are required.
Which type of valve is best suited for this application?