COSC 325 HOUSTON 2025
(PLUMBING)
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
water softener - ANSWERS-a device containing an ion-exchange resin that is used
to treat water by removing ions causing water hardness
QUESTION 2
types of water softeners - ANSWERS-cabinet and two-tank
QUESTION 3
three openings on top of gas water heater - ANSWERS-cold water supply, hot
water outlet, relief (t&p) valve
QUESTION 4
Water Hammer - ANSWERS-The concussion and banging noise that results when
a volume of water moving in a pipe suddenly stops or loses momentum.
END OF
PAGE 1
, COSC 325 HOUSTON 2025
(PLUMBING)
QUESTION 5
Water Hammer Arrestor - ANSWERS-A device utilized to absorb the pressure
surge (water hammer) that occurs when
water flow is suddenly stopped in a water supply system.
QUESTION 6
rough-in - ANSWERS-Installation of all parts of the plumbing system which can
be completed prior to the installation of fixtures
QUESTION 7
Water test & duration - ANSWERS-plumbing system test in which pipe openings
are sealed and pipe is filled with water to provide a specified amount of pressure to
determine tightness of the system. Must be filled with water to a point equal to a
10' head. must remain constant for 15 min
QUESTION 8
END OF
PAGE 2
(PLUMBING)
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
water softener - ANSWERS-a device containing an ion-exchange resin that is used
to treat water by removing ions causing water hardness
QUESTION 2
types of water softeners - ANSWERS-cabinet and two-tank
QUESTION 3
three openings on top of gas water heater - ANSWERS-cold water supply, hot
water outlet, relief (t&p) valve
QUESTION 4
Water Hammer - ANSWERS-The concussion and banging noise that results when
a volume of water moving in a pipe suddenly stops or loses momentum.
END OF
PAGE 1
, COSC 325 HOUSTON 2025
(PLUMBING)
QUESTION 5
Water Hammer Arrestor - ANSWERS-A device utilized to absorb the pressure
surge (water hammer) that occurs when
water flow is suddenly stopped in a water supply system.
QUESTION 6
rough-in - ANSWERS-Installation of all parts of the plumbing system which can
be completed prior to the installation of fixtures
QUESTION 7
Water test & duration - ANSWERS-plumbing system test in which pipe openings
are sealed and pipe is filled with water to provide a specified amount of pressure to
determine tightness of the system. Must be filled with water to a point equal to a
10' head. must remain constant for 15 min
QUESTION 8
END OF
PAGE 2
