Centrifugal Pump Curves – 4 Types of Performance Curves

• Head Vs. Flow Curve (H-Q Curve)
• Efficiency Curve.
• Power / Energy Curve.
• NPSHR curve.
• Pump Family Curve.

How many characteristics curves are there in centrifugal pumps?

Curves relating total head, efficiency, power, and net positive suction head required (NPSHR) to discharge or pump capacity (Q) are utilized to describe the operating properties (characteristics) of a pump. This set of four curves is known as the pump characteristic curves or pump performance curves.

What is a pump operating curve?

What is a pump curve? In short, a pump curve is a graphical representation of a pump’s performance based on testing conducted by the manufacturer. Each pump will has its own pump performance curve and it varies from pump to pump. This is based on the pump horsepower and the size and shape of the impeller.

How do you select a curve from a pump?

Look at the left side of the curve and you will see a label HEAD – FT and numbers starting with 0 and increasing as you move up the chart. This is the pressure that the pump is capable of producing, measured in feet of head (not PSI!) The bottom of the curve is labeled US GPM. This is the flow that the pump produces.

What is ETA in pump curve?

The upper efficiency curve (Eta2) is the pump efficiency curve (eta pump). The lower efficiency curve (Eta1) is the total efficiency curve (eta pump + motor), taking all electrical, mechanical, and hydraulic losses into consideration.

What is centrifugal pump curve?

Centrifugal Pump Curve. Also called a pump selection curve, pump efficiency curve, or pump performance curve, a pump curve chart gives you the information you need to determine a pump’s ability to produce flow under the conditions that affect pump performance.

What are the characteristics curves of centrifugal pump?

The characteristic curves of centrifugal pumps plot the course of the following parameters against flow rate (Q): head (H) (see H/Q curve), power input (P), pump efficiency (η) and NPSHr, i.e. the NPSH required by the pump.

What is the difference between pump curve and system curve?

In general, a pump is used to overcome frictional head loss in piping systems as well as system elevation changes between system boundaries (i.e., static head). The system curve helps quantify the resistance in a system due to friction and elevation change over the range of flows.

How are pump curves generated?

How to Generate Pump Curves. Pump curves can be generated by reading measurements of pressure, NPSH, power, efficiency and others, while the pump is operating at different flow conditions. These results are then plotted against the flow rate to generate the pump characteristic curves.

Why choose euroeuroflo site pumps?

Euroflo is a leading supplier of high-quality site pumps. Our range of pumps includes Grindex submersible pumps, dredging pumps & super silent diesel pumps. Our pumps are available for hire and sale.

What is the euroflo EK series?

The Euroflo EK series are non-self-priming centrifugal pumps with semi-open impeller. The pump wetted parts are of stainless steel (SUS 304 or SUS 316 ) construction and are particularly suitable for transfer of liquid with suspended solid size up to 14mm ( spherical ).

What is an EB2 centrifugal pump?

EB/EB2 series is a single/twin impellers close-coupled stainless steel centrifugal pumps. They are ideal where space is a premium and a need for ease of alignments between pump and motor. Main dimensions and performance according to ISO2548C standard.

What are the standard pumps fitted with?

Standard pumps are fitted with motor according to IEC, with motor efficiency Class EF1; EF2 or NEMA frame upon request. All Pumps are fitted with cartridge type mechanical seal for easy chage out without removing motor and adapter or the pipes (EMV32 and above) and Laser Weld impeller for strength and material intagrity (EMV20 and Above)