CSA C504:20

1.1 Inclusions This Standard is intended to be used with an industrial or commercial clean-water pumping system with the following characteristics: a) any application of electrically driven single- and multi-stage rotodynamic pumps; b) pumping systemc) all liquids with viscosity up to 25 cSt, provided that ANSI/HI 9.6.7 is used to correct the performance to 1 cSt. 1.2 Exclusions This Standard is not intended to be used with the following pumping systems: a) application of positive displacement pumps, defined as a category of pumps where a set volume of liquid is trapped in a chamber and conveyed from the suction side of the pump to the discharge side of the pump through displacement of liquid by a solid component such as a piston, plunger, gear tooth, vane, screw, diaphragm, etc.; and b) pumping system applications handling shear-sensitive liquids. 1.3 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. with a flow range between 20 m3/h to 36 000 m3/h; and