This apparatus has asingle circuit with bends, pressure tappings and an expansion-contraction. Aball valve at the pipe exit controls water flow. The valve is downstream, so itdoes not cause any upstream turbulence. This compact bench-top apparatus uses smooth, industry standardplastic pipe, commonly used in domestic and other small-bore water systems. Itworks with Digital Hydraulic Bench. The bench supports the apparatus andcirculates and measures the water flowing through it. A useful diagram on the apparatus shows themain dimensions of the pipework and fittings. It also shows the positions ofthe tappings and the tubes that they connect to. Each pressure tapping point in the pipeconnects to a piezo meter tube in the vertical panel of the apparatus. The product includes ahand-pump to adjust the datum of the piezometer tubes. During experiments, these tubes measure and compare pressure differences across thebends, expansion and contraction.
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