A recent article in SprinklerAge magazine by Victaulic VP Susan Schierwagen pointed out that, from a corrosion standpoint, a 1” schedule 10 sprinkler system set-up provides more wall thickness throughout using a Victaulic type connection than a 1” schedule 40 system using a threaded connection. It also has a significant effect on system economics as well. Schedule 10 pipe significantly reduces material and handling costs, simplifies ordering, installation and labor, and improves system hydraulics by increasing the inside diameter of the pipe. The difference in weight alone is substantial. A suppression system constructed with grooved 1-in. Schedule 10 pipe could be up to 17% lighter than a system constructed with Schedule 40 pipe, which not only makes installation easier, but considerably reduces material costs. We’ve often commented about reasons for the divergence between construction spending and standard pipe shipments shown in the chart at the bottom of this page. While we believe there are a number of reasons, this type of application design would be a contributor.
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