HVA 121 QUIZ ONE | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE
SOLUTION
The organization that establishes manufacturing standards for copper tubing is ______________ -
(ANSWER)ATSM
The working pressure rating of hard-drawn copper tubing is typically _________. - (ANSWER)60% higher
than soft copper tubing.
As the wall thickness of copper tubing increases, the inside diameter of the tube is ____________. -
(ANSWER)decreased.
One of the main uses of flare fittings in HVAC work is to _____________. - (ANSWER)Connect various
pressure controls.
One of the best reasons to use a tubing cutter instead of a hacksaw is that _____________. -
(ANSWER)it does not create loose cuttings.
Single thickness flares may not be strong enough for ________________. - (ANSWER)larger sizes of
copper tubing
The pressure-relief valve on a nitrogen pressure test set should be set to relieve pressure at
____________ - (ANSWER)1 or 2 pounds above the required test pressure.
What type of tubing or pipe would be expected to require the closest hanger spacing? (1/2" copper, 1
1/2" copper, 3/4" steel pipe, 2" steel pipe) - (ANSWER)1/2" copper
The type of plastic pipe that does not support combustion is _________. - (ANSWER)CPVC
Which plastic product is the most widely used in the plumbing industry? - (ANSWER)PEX
Which type of plastic piping can be threaded? (PEX, Schedule 40 PVC, Schedule 80 PVC, Schedule 40
CPVC) - (ANSWER)Schedule 80 PVC.
, HVA 121 QUIZ ONE | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE
SOLUTION
The most common way to join plastic pipe is ______________. - (ANSWER)Solvent cementing
The handling and curing times in wet environments for solvent-cement joints in plastic piping should be
extended ________. - (ANSWER)50%
When a metal can be pressed or formed to some degree without cracking and breaking, it is said to be
__________ - (ANSWER)Malleable
A(n) _________ component has been coated with or covered with a thin layer of copper. -
(ANSWER)Copper-clad
The compression ring that is placed around a tube, and then squeezed against the tube by the
compression nut is called a(n) ________. - (ANSWER)ferrule
A heat bonding method of joining metals using an alloy with a melting point below 842 Degrees F (450
degrees C) is called ________. - (ANSWER)soldering
When one metal, sometimes precious such as gold, is going to be used to cover another metal, the
intent is to ________ the second metal. - (ANSWER)plate
A(n) _________ metal has been heat treated to soften it, making it formable. - (ANSWER)annealed
When a symmetrical, angled surfaces is created on the edge of a pipe or tube, breaking what would
other wise be a 90 degree angle, this edge is called a(n) _____________ - (ANSWER)chamfer
The process of _______________ occurs when a metal is repetitively reformed, causing a permanent
change in its crystalline structure, which results in an increase in its hardness. - (ANSWER)work
hardeneing
The process of ___________ is expanding the end of a tube to create a socket to allowing it to be
connected to another tube or fitting of equal size. - (ANSWER)Swaging
SOLUTION
The organization that establishes manufacturing standards for copper tubing is ______________ -
(ANSWER)ATSM
The working pressure rating of hard-drawn copper tubing is typically _________. - (ANSWER)60% higher
than soft copper tubing.
As the wall thickness of copper tubing increases, the inside diameter of the tube is ____________. -
(ANSWER)decreased.
One of the main uses of flare fittings in HVAC work is to _____________. - (ANSWER)Connect various
pressure controls.
One of the best reasons to use a tubing cutter instead of a hacksaw is that _____________. -
(ANSWER)it does not create loose cuttings.
Single thickness flares may not be strong enough for ________________. - (ANSWER)larger sizes of
copper tubing
The pressure-relief valve on a nitrogen pressure test set should be set to relieve pressure at
____________ - (ANSWER)1 or 2 pounds above the required test pressure.
What type of tubing or pipe would be expected to require the closest hanger spacing? (1/2" copper, 1
1/2" copper, 3/4" steel pipe, 2" steel pipe) - (ANSWER)1/2" copper
The type of plastic pipe that does not support combustion is _________. - (ANSWER)CPVC
Which plastic product is the most widely used in the plumbing industry? - (ANSWER)PEX
Which type of plastic piping can be threaded? (PEX, Schedule 40 PVC, Schedule 80 PVC, Schedule 40
CPVC) - (ANSWER)Schedule 80 PVC.
, HVA 121 QUIZ ONE | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE
SOLUTION
The most common way to join plastic pipe is ______________. - (ANSWER)Solvent cementing
The handling and curing times in wet environments for solvent-cement joints in plastic piping should be
extended ________. - (ANSWER)50%
When a metal can be pressed or formed to some degree without cracking and breaking, it is said to be
__________ - (ANSWER)Malleable
A(n) _________ component has been coated with or covered with a thin layer of copper. -
(ANSWER)Copper-clad
The compression ring that is placed around a tube, and then squeezed against the tube by the
compression nut is called a(n) ________. - (ANSWER)ferrule
A heat bonding method of joining metals using an alloy with a melting point below 842 Degrees F (450
degrees C) is called ________. - (ANSWER)soldering
When one metal, sometimes precious such as gold, is going to be used to cover another metal, the
intent is to ________ the second metal. - (ANSWER)plate
A(n) _________ metal has been heat treated to soften it, making it formable. - (ANSWER)annealed
When a symmetrical, angled surfaces is created on the edge of a pipe or tube, breaking what would
other wise be a 90 degree angle, this edge is called a(n) _____________ - (ANSWER)chamfer
The process of _______________ occurs when a metal is repetitively reformed, causing a permanent
change in its crystalline structure, which results in an increase in its hardness. - (ANSWER)work
hardeneing
The process of ___________ is expanding the end of a tube to create a socket to allowing it to be
connected to another tube or fitting of equal size. - (ANSWER)Swaging
