Piping Materials

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Piping Materials

• Plumbing Systems
• CNST 305
• Environmental Systems 1
• Dr. Berryman

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Material Selection Criteria

• Corrosiveness
• Temperature
• Pressure
• Material allowed by code
• Availability
• Cost of material/installation
• Miscellaneous
• Noise
• Combustion

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Steel (carbon) Pipe
Types Black Galvanized Cast Iron
Connections Tapered Thread or Threaded Flanged Grooved Welded
Sizes/Weight Schedule 40, 80, 120 Nominal I.D. used for measure (ie ¾ .82 inches O.D. 1.0 inches) Cast iron SV and XH
Fittings Elbow, couplings, union, wye, street L, reducer, dielectric, 90o L, etc.
most commonly used
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Cast Iron
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Copper (nonferrous)
Types Tempered hard or soft
Connections Soldered (sweated) Flanged Compression
Sizes/Weight K heaviest with green stripe L medium weight w/ blue stripe M lightest w/ red strip DWV yellow stripe (non pressure) Measured O.D.
Fittings Elbow, couplings, street L, reducer, dielectric, 90o L, Tees, etc.
most commonly used
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Plastics (polymers)
Types ABS, CPVC, PB, PE, PP, PVC, PVDF, Fiberglass
Connections Solvent weld Flanged (plastic) Compression
Sizes/Weight Schedule 40, 80 or 200 psi
Fittings Elbow, couplings, street L, reducer, dielectric, 90o L, Tees, etc.
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Stone-Based
Types Concrete Clay Glass
Connections Compression (neoprene gasket or O-ring) Concrete grout
Sizes/Weight Diameters (ie up to 144 for concrete)
Fittings Elbow, reducers, couplings, hub and spigot, etc.
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Valves

• Butterfly
• Check
• Gate
• Globe
• Ball

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Terminology

• Riser
• Vertical water supply piping supplying more one
  floor or more
• Stack
• Vertical DWV piping (exceptions vertical fixtures
  and vented stacksie stack vents, vent stacks)
• Branch
• Horizontal piping (water and DWV) for plumbing
  other than a riser, main or stack
• Main
• Principal pipe supply for connecting branches

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Terminology (cont.)

• Vent Lines
• Soil Lines
• Traps
• Air Gap/Break
• Prevents back sophoning
• Flush valves have air breaks
• Flushometers (flush valves)
• Sump
• A tank or pit that receives liquid wastes
• Grey water

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Terminology (cont.)

• Potable Water
• Water Service
• From water main
• Water Distribution Service
• Water piping within the building to point of
  usage
• Water Supply System
• All water pipes, fittings, control valves, etc.
  within and adjacent to building

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Next Time

• Waste Water Disposal and Storm Drainage
• Chapter 4, 7 Appendix A (Wentz) and 8.6 -8.7
  (Toa)