MEP – Exam I, 2026 – Study guide and practice material
"Size" is the general term commonly used when referring to pipe diameter, and should not be
taken as the actual outside diameter of the pipe. - correct answer ✔✔ T
Polyvinyl chloride (PVC) fittings are manufactured by the extrusion process in which plastic
resins are heated, softened, and forced through a circular die, which forms the cylindrical pipe
shape. - correct answer ✔✔ F
An expansion loop is a loop in plastic tubing and provides an area for the tubing to expand and
contract without stressing. - correct answer ✔✔ T
PVC pipe and fittings are plastic pipe and fittings used for sanitary drainage and vent piping,
aboveground and underground storm water drainage, water mains, and water service lines. -
correct answer ✔✔ T
PVC Schedule 40 pipe and fittings, commonly used for industrial pressure applications, are
yellow in color. - correct answer ✔✔ F
Type K copper tube has the thickest wall, followed by type L, type M, and type MWV with the
thinnest wall. - correct answer ✔✔ T
Copper tube is available as either drawn or annealed. - correct answer ✔✔ T
Drawn copper tube is available in nominal sizes up to 8' and in 20' straight lengths. - correct
answer ✔✔ T
Cast iron pipe and fittings are made from commercially pure copper (85% pure) and are formed
by a hammering process. - correct answer ✔✔ F
, DWV fittings have a deeper solder socket than pressure fittings since pressurized water flows
through the tube and fittings. - correct answer ✔✔ F
Copper rolled groove joint copper fittings are used for aboveground potable water supply
applications. - correct answer ✔✔ T
No-hub and bell-and-spigot cast iron soil pipe and fittings are primarily used for water supply
piping. - correct answer ✔✔ F
Galvanized pipe is typically used for potable water piping, such as water distribution systems. -
correct answer ✔✔ T
Threaded and Coupled (T and C) pipe is steel pipe used for threaded joints that has threads on
both ends of the pipe and a coupling on one end. - correct answer ✔✔ T
Class 300 malleable iron fittings are standard weight fittings, while class 150 fittings are extra-
heavy fittings. - correct answer ✔✔ F
The pressure rating for a rated valve is marked in raised letters on the inlet of the valve. - correct
answer ✔✔ F
A split-wedge disk gate is a gate valve in which a two-piece bronze wedge fits against the seat to
restrict fluid flow. - correct answer ✔✔ T
Globe valves must be installed with the flow direction arrow pointing in the downstream
direction. - correct answer ✔✔ T
"Size" is the general term commonly used when referring to pipe diameter, and should not be
taken as the actual outside diameter of the pipe. - correct answer ✔✔ T
Polyvinyl chloride (PVC) fittings are manufactured by the extrusion process in which plastic
resins are heated, softened, and forced through a circular die, which forms the cylindrical pipe
shape. - correct answer ✔✔ F
An expansion loop is a loop in plastic tubing and provides an area for the tubing to expand and
contract without stressing. - correct answer ✔✔ T
PVC pipe and fittings are plastic pipe and fittings used for sanitary drainage and vent piping,
aboveground and underground storm water drainage, water mains, and water service lines. -
correct answer ✔✔ T
PVC Schedule 40 pipe and fittings, commonly used for industrial pressure applications, are
yellow in color. - correct answer ✔✔ F
Type K copper tube has the thickest wall, followed by type L, type M, and type MWV with the
thinnest wall. - correct answer ✔✔ T
Copper tube is available as either drawn or annealed. - correct answer ✔✔ T
Drawn copper tube is available in nominal sizes up to 8' and in 20' straight lengths. - correct
answer ✔✔ T
Cast iron pipe and fittings are made from commercially pure copper (85% pure) and are formed
by a hammering process. - correct answer ✔✔ F
, DWV fittings have a deeper solder socket than pressure fittings since pressurized water flows
through the tube and fittings. - correct answer ✔✔ F
Copper rolled groove joint copper fittings are used for aboveground potable water supply
applications. - correct answer ✔✔ T
No-hub and bell-and-spigot cast iron soil pipe and fittings are primarily used for water supply
piping. - correct answer ✔✔ F
Galvanized pipe is typically used for potable water piping, such as water distribution systems. -
correct answer ✔✔ T
Threaded and Coupled (T and C) pipe is steel pipe used for threaded joints that has threads on
both ends of the pipe and a coupling on one end. - correct answer ✔✔ T
Class 300 malleable iron fittings are standard weight fittings, while class 150 fittings are extra-
heavy fittings. - correct answer ✔✔ F
The pressure rating for a rated valve is marked in raised letters on the inlet of the valve. - correct
answer ✔✔ F
A split-wedge disk gate is a gate valve in which a two-piece bronze wedge fits against the seat to
restrict fluid flow. - correct answer ✔✔ T
Globe valves must be installed with the flow direction arrow pointing in the downstream
direction. - correct answer ✔✔ T
