SHANGHAI SHINJO PUMP CO.,LTD.

Main principles of pumps selection The selection of the pumping equipment is a crucial point that determines both process parameters and the in-use performance of the unit under development. During the selection of the type of pump three groups of criteria can be distinguished: Process and design requirements Nature of pumped medium Key design parameters Process and design requirements: In some cases, the pump selection is determined by some stringent requirements for a number of design or process parameters. Unlike piston-type pumps, centrifugal pumps can provide uniform delivery of pumped medium, whereas in order to meet uniformity condition on a piston-type pump its design has to be made noticeably complicated, by arranging on the crankshaft several pistons making reciprocating movements with certain delay from each other.

Pump performance curve remains an attractive topic in all food, milk, beverage, and pharmaceutical industries, so in this post we provide important information on our two most popular styles - centrifugal and positive transfers. A pump performance curve helps you select the right pump for the specific needs of your application. PUMP PERFORMANCE CURVE Also called the pump selection curve, the pump efficiency curve, or the pump performance curve, the pump curve graph gives you the information you need to determine the ability of the pump to produce a flow in conditions that affect performance. The reading pump curve accurately helps you choose the right pump based on application variables such as: Head (water pressure) Flow (the volume of liquid you have to move in a given time period) As we can see, we can also use pumps in parallel to increase flow. This pump curve explanation also discusses variables such as: RPM Impeller size, as they related to pump performance Power Efficien