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Piping Materials
Plumbing Systems
CNST 305 Environmental Systems 1Dr. Berryman
1b Introduction – Materials Chapter 1, 3; Appendix D (Wentz)
and 7.4.1 - 7.4.3 (Tao)
4.39 Building Codes and Standards (2 hrs); 4.44 Notes and specifications, reference conventions (1 hrs)
Material Selection Criteria
Corrosiveness Temperature Pressure Material allowed by code Availability Cost of material/installation Miscellaneous
Noise Combustion
Steel (carbon) PipeTypes Black
GalvanizedCast Iron
Connections Tapered Thread or Threaded*FlangedGroovedWelded
Sizes/Weight Schedule 40*, 80, 120Nominal 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
Cast Iron
Copper (nonferrous)
Types Tempered hard or soft
Connections Soldered (sweated)*FlangedCompression
Sizes/Weight K – heaviest with green stripeL – medium weight w/ blue stripeM – lightest w/ red strip*DWV – yellow stripe (non pressure) Measured O.D.
Fittings Elbow, couplings, street L, reducer, dielectric, 90o L, Tees, etc.