Question 1

Butt Weld Joint

Accepted Answer

A type of joint that is made by fitting the ends of two pipes together and welding around the joint. This provides a very strong connection.

Question 2

Socket Weld

Accepted Answer

A type of pipe joint in which a pipe is inserted into a recessed area of a valve, fitting, or flange before welding.

Question 3

Dielectric Union

Accepted Answer

A type of plumbing fitting designed to effectively prevent galvanic corrosion between dissimilar metals in a piping system.

Question 4

Beveling

Accepted Answer

The process of cutting an angle on the end of a pipe to prepare it for welding.

Question 5

Tack Weld

Accepted Answer

Small, temporary weld used to hold pieces in place while preparing for the final welding.

Question 6

Saddle Tee

Accepted Answer

A fitting that allows a branch line to be installed at a 90-degree angle to the main line.

Question 7

Hydrostatic Testing

Accepted Answer

A type of pressure test to check for leaks in a system by filling it with a liquid, typically water, and applying pressure.

Question 8

Steam Trap

Accepted Answer

A device that filters out condensate and non-condensable gases without letting steam escape.

Question 9

Expansion Joint

Accepted Answer

A device that allows for the expansion and contraction of a pipe due to temperature changes.

Question 10

Brazing

Accepted Answer

A process similar to soldering but at higher temperatures, used to join pipes made of different metals.

Question 11

Swage

Accepted Answer

A method of reducing the diameter of a pipe.

Question 12

Flange

Accepted Answer

A method of connecting pipes, valves, pumps, and other equipment to form a piping system.

Question 13

Nipple

Accepted Answer

A short piece of pipe with threads on both ends.

Question 14

Anode Rod

Accepted Answer

A rod made of aluminum or magnesium that prevents corrosion in a hot water tank.

Question 15

Relief Valve

Accepted Answer

A valve that opens to release excess pressure from a system.

Question 16

Globe Valve

Accepted Answer

A type of valve that allows for precise regulation of flow.

Question 17

Gate Valve

Accepted Answer

A valve that allows for full flow with minimum pressure drop.

Question 18

Ball Valve

Accepted Answer

A valve that uses a spherical disc to control the flow of fluids.

Question 19

Check Valve

Accepted Answer

A valve that allows fluid to flow in one direction and prevents backflow.

Question 20

Butterfly Valve

Accepted Answer

A valve with a disc that rotates to regulate fluid flow.

Question 21

Pressure Gauge

Accepted Answer

A device that measures the pressure in a system.

Question 22

Backflow Preventer

Accepted Answer

A device that prevents contaminated water from flowing back into the potable water supply.

Question 23

Air Gap

Accepted Answer

The unobstructed vertical space between the water outlet and the flood level of a fixture.

Question 24

Siphonage

Accepted Answer

The suction or drawing off of liquids by means of a siphon.

Question 25

Pipe Hanger

Accepted Answer

A device used to support and stabilize piping systems.

Question 26

P-trap

Accepted Answer

A U-shaped pipe that retains a small amount of water to prevent sewer gases from entering the home.

Question 27

Vent Stack

Accepted Answer

The part of the drainage system that allows sewer gases to escape from the house to the outdoors.

Question 28

DWV

Accepted Answer

An abbreviation for Drain, Waste, and Vent, referring to the system that removes waste water and sewage from a building.

Question 29

Soldering

Accepted Answer

A process of joining two pieces of metal together by melting a filler metal into the joint.

Question 30

PEX

Accepted Answer

Cross-linked polyethylene, a type of flexible plastic pipe used for hot and cold water plumbing systems.

Question 31

Compression Fitting

Accepted Answer

A type of fitting that uses a ferrule to seal the connection.

Question 32

Fernco Fitting

Accepted Answer

A brand name for a flexible, rubber pipe coupling.

Question 33

Oxy-Acetylene Torch

Accepted Answer

A type of torch that uses a mixture of oxygen and acetylene gas to create a high-temperature flame for welding or cutting metal.

Question 34

MAPP Gas

Accepted Answer

A type of gas used for high temperature applications, such as brazing, soldering, and heating.

Question 35

Corrosion Inhibitor

Accepted Answer

A chemical compound that decreases the corrosion rate of a material.

Question 36

Annealing

Accepted Answer

The heat treatment process that reduces hardness, increases ductility and helps eliminate internal stresses.

Question 37

Pipe Schedule

Accepted Answer

A system used to determine the wall thickness of a pipe.

Question 38

Pipe Dope

Accepted Answer

A type of pipe sealant used on threads to create a better seal.

Question 39

Strainer

Accepted Answer

A type of device used to filter out solid debris from a fluid flow system.

Question 40

Purging

Accepted Answer

The act of removing the contents of a pipe or vessel using a purge fluid.

Question 41

Victaulic Coupling

Accepted Answer

A type of grooved mechanical pipe joint.

Question 42

Y-Strainer

Accepted Answer

A type of strainer in the shape of a "Y" used in piping to remove debris.

Question 43

Pipe Elbow

Accepted Answer

A type of fitting that is bent in a way to produce an 90° change in the direction of flow.

Question 44

Heat Exchanger

Accepted Answer

A system used to transfer heat between two or more fluids.

Question 45

Schedule 40

Accepted Answer

A standard for pipe wall thickness. Schedule 40 pipes have a certain minimum wall thickness.

Question 46

Schedule 80

Accepted Answer

A standard for pipe wall thickness. Schedule 80 pipes have a thicker wall than Schedule 40 pipes.

Question 47

Branch Connection

Accepted Answer

The point at which one pipe intersects with another pipe.

Question 48

Stub-in

Accepted Answer

The point at which a branch pipe extends from a main pipe to a fixture or other end-use point.

Question 49

Boiler Blowdown

Accepted Answer

The removal of water from a boiler to manage the concentration of suspended and total dissolved solids.

Question 50

Pressure Reducing Valve

Accepted Answer

A valve that automatically cuts off the flow of a liquid or gas at a certain pressure.

Question 51

Swing Check Valve

Accepted Answer

A type of check valve that allows flow in one direction and prevents flow in the opposite direction.

Question 52

Reducing Elbow

Accepted Answer

A type of elbow that changes the direction and diameter of a pipe.

Question 53

Pipe Bend Radius

Accepted Answer

The radius of the curve for a pipe bend.

Question 54

Dielectric Fitting

Accepted Answer

A type of fitting used to isolate two different metals to prevent galvanic corrosion.

Question 55

Pipe Coupling

Accepted Answer

A short piece of pipe with two female ends that allows two pipes to be joined together.

Question 56

Union Joint

Accepted Answer

A type of fitting that allows pipes to be securely connected and disconnected without the need for turning.

Question 57

Return Bend

Accepted Answer

A pipe fitting which allows a pipe to make a 180 degree change in direction.

Question 58

Rotary Valve

Accepted Answer

A type of valve in which the rotation of a passage or passages in a transverse plug regulates flow of liquid.

Question 59

Solenoid Valve

Accepted Answer

An electrically controlled valve used for controlling liquid or gas flow.

Question 60

Regulator

Accepted Answer

A device for controlling the rate of flow in a pipeline.

Question 61

Pipe Threading

Accepted Answer

The process of creating screw threads on the end of a pipe so it can be screwed into place.

Advanced Flashcards for Red Seal Steamfitter/Pipefitter Exam