BS EN ISO 2858:2010 pdf free download.End-suction centrifugal pumps (rating 16 bar) · Designation, nominal duty point and d imensions. BS EN ISO 2858 specifies the principal dimensions and nominal duty point of end-suction centrifugal pumps having a maximum operating rating of 16 bar.2 2 References ISO/R 228, Pipe threads where pressure-tight joints are not made on the threads (1/8 inch to 6 inches). ISO 496. Driving and driven machines — Shaft heights. ISOIR 775, Cylindrical and 1/10 conical shaft ends. ISO 3069, End-suction centrifugal pumps — Dimensions of cavities for mechanical seals and for soft packing. (Supplement to this international Standard.) NOTE ISO 2084 can be used for the dimensions of flanges. 3 Designation The pump designation comprises three numbers: the first corresponds to the inlet diameter, the second to the outlet diameter and the third to the nominal diameter of the impeller. Example of designation A centrifugal pump with an inlet diameter of 80 mm, an outlet diameter of 50 mm and a nominal impeller diameter of 250 mm is designated 80-50-250. 4 Nominal duty point and dimensions See figure on page 4 and Table on page 5. 5 Static test pressure Static test pressure shall be 1,5…