N. A. MusaJ. Y. JiyaT. K. Aderoju2025-03-2520162225-0573http://repository.futminna.edu.ng:4000/handle/123456789/512This paper reports the design, construction and performance evaluation of a test rig for determining the head loss and friction factor of PVC pipes of different diameters (13mm, 19mm and 25mm) transporting water. On performance evaluation, friction factors of 0.0121, 0.0396 , 0.0171 and head losses of 37.8mm, 25.2mm and 12.6mm for 13mm, 19mm, and 25mm diameter PVC pipes respectively were obtained. Keywords: Head loss, friction factor, PVC pipes, test rig, waterHead lossfriction factorPVC pipestest rigwaterArticle