material
Number of types of plastic pipe in plumbing industry used primarily ___ - correct
answer ✔✔ 6
SDR indicates the ratio between the pipes outside diameter and it's __ - correct
answer ✔✔ Wall thickness
A check valve performs which of the following functions? - correct answer ✔✔
Prevents reverse flow in a pipe
Protect plastic pipe from long-term sun exposure because it will ___ - correct
answer ✔✔ Degrade
If you see any indication of damage or cracking at the tubing end, cut off at least
___ - correct answer ✔✔ 2 inches beyond any visible crack
When joining PVC and CPVC pipe, the joint bond relies on a ___ - correct answer
✔✔ Interference fit
Outdoor gravity sewers, which are typically installed to connect with municipal
utilities often use bell and spigot pipe made from ___ - correct answer ✔✔ PVC
Joining PEX pipe and fittings typically involves ___ - correct answer ✔✔ Crimp
rings