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Plumbing - Coggle Diagram
Plumbing
Connections
Direct
Back pressure
back siphonage
Indirect
back siphonage
Vacuum Breaker
Sprinkler system
bidets
dishwasher
garden hose
Piping
Materials
Copper
Type K
Underground
Green
Interior
Thickest
Type L
Underground
Interior
Blue
Type M
Interior
Red
Thinnest
1960s +
Supports
<1"
8ft
1.25"
10ft
Galvanized
1920s-1960s
Interior corrodes
builds up
Lower water pressure
Supports
<1.25"
10ft
1.5"
10ft
Plastic
PVC
Cold Water only
Service
Distribution
1960s +
schedule 40
typical
Schedule 80
thicker
Support
4ft
No metal
1/2" Straps
Polybutylene
1970s-1990s
Gray or Black
Recalled
PEX
1990s +
hot & Cold
service
Distribution
Stretch resistant
hePEX
Radiant heat only
Supported
32"
Plastic hangers
CPVC
Not interchangeable w/ PVC
Supports
4ft
No metal
1/2" Straps
1960s +
HDPE
Cold water
Service mains
Underground sprinkler
Private wells
Lead
Ball at main
Recommend Water test
soft
bends easily
1920-
Cross Connections
Condition/Support
Galvanic Action
Dissimilar Metals
Metal - Metal contact
Same conduction solution
Preventing Corrosion
Dielectric Union
Brass nipple
< 6"
Pipe Noise
Water Hammer
Air Chamber
Pipe Groan
add supports
Remove wood/pipe contact