What does chemically inert mean?
Does not react with other chemicals
When tubing is cracked or damaged how far do you cut off from that point?
At least two inches beyond damaged section
What do you use to attach horizontal hangers to wooden structures?
Lag screws or large nails
What can you use instead of a 90 when using pex?
A long or short bend
What are the three most common types of plastic pipe?
Abs, pvc, and Pex
Picture of pex a and pex b
top pex b
bottom pex a
Beam Clamp
How many connections are on a four-port manifold.
5 or 6
What is the minimum sch pvc pipe for use in or under buildings?
Sch 40
Plumbers use ____ to form a ___when joining abs, pvc, and cpvc
solvent cement solvent weld
The maximum vertical spacing on steel pipe is?
15 feet
How many connections do you save when using a four-port manifold instead of tees?
6
What is the life span of pvc under test conditions?
Indefinite life span
How far should the memory mark be from the end of the bell on pvc bell and spigot pipe.
3/8"
Why do you blow out water in subfreezing temps after testing?
To avoid damage from pipes freezing
What two abs fittings and sizes do you need when installing back-to-back lavatories?
two santees' 2x 1 1/2 , 2 x 1 1/2 x 1 1/2
What does astm stand for?
American society for testing materials
A new technique for joining pe that requires less training is ?
Compression collars
Before removing test caps and plugs what do you do?
Carefully vent system to atmospheric pressure
How many nuts, bolts and washers are needed to install a toilet?
Two bolts, four nuts, and four washers