Dear List, Does anyone have handy the formula for estimating static pressure in hose/pipe as a function of inside-diameter and rate of flow? I've not been able to turn up this info in NZ. I need to know in order to specify the hose sizes for our fuel transfer system. Some runs are over 35-ft (from port hull tanks to stb hull fuel distribution manifold), and we are lifting the diesel about 5-ft from tank bottoms to diaphragm fuel transfer pump. Many thanks, Steve ------------------------------------------------ Stephen C. Darden Email: darden@xtra.co.nz Adagio Marine Ltd. Fax: 649/4037-213 P.O. Box 161 Voice: 649/4037-801 Russell NEW ZEALAND