COSC 325 Houston (plumbing) Latest Update 2024-2025 Actual Exam 120 Questions and 100% Verified Correct Answers Guaranteed A+ Approved by the Professor
1 CFH (Cubic Feet per Hour) - CORRECT ANSWER: 1000Btu/h
- roof drain systems - CORRECT ANSWER: scupper, gutter mounted at low end of roof,
internal drain system
Above ground pipe material - CORRECT ANSWER: Metal
ABS - CORRECT ANSWER: Black plastic material
Angle Valve - CORRECT ANSWER: Globe valve in which the inlet and outlet are at 90 degrees to each other. less resistance to water flow and reduce number of joints required
Ball Valve - CORRECT ANSWER: Valve having a ball-shaped internal component with a hole through its center that permits water to flow through when aligned with the waterway.
Butterfly Valve - CORRECT ANSWER: Control valve that uses a flat circular plate in a pipe that rotates 90 degrees across the cross section of the pipe to control the flow of water.
Check Valve - CORRECT ANSWER: A valve that allows flow in one direction but
prevents flow in the opposite direction.
clothes washer outlet box - CORRECT ANSWER: plastic enclosure that accommodates
water supply and waste connections for a clothes washer 1 / 2
Common Vent - CORRECT ANSWER: A single vent that ventilates multiple traps in the case of a back to back vent.
CPVC (chlorinated polyvinyl chloride) - CORRECT ANSWER: hot and cold water
supply, off white color
DFU - CORRECT ANSWER: Drainage Fixture Unit. Measure of probable discharge of
wastewater and waterborne waste into the drainage system formulated in tests.
diaphragm flushometer valve - CORRECT ANSWER: flushometer valve in which a
segmented diaphragm within the valve body controls the flushing water by equalizing pressure on both sides of the diaphragm
DW - CORRECT ANSWER: Domestic Water
DWV - CORRECT ANSWER: abbreviation for drainage, waste, and vent. Found on "p" sheets
electronic power faucets - CORRECT ANSWER: battery powered or plugged into a
receptacle
FDC - CORRECT ANSWER: Fire Department Connection
Fittings for Cast Iron - CORRECT ANSWER: Hub (Bell-and-Spigot) and no hub
Fittings for Copper tubing? - CORRECT ANSWER: Solder joint fittings (Require fire watch), press fitting, Rolled groove joint fitting, threaded
Fittings for plastic piping? - CORRECT ANSWER: Cement, caps, compression fittings
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