Performance curves

PumpsSeries P 

These curves have been plotted from the results of numerous testsperformed under stringent conditions with water as the test mediumand aluminium pumps with buna-N diaphragms and ball valves as thetest pumps. These curves can only relate to installations undersimilar conditions, but as this never occurs we must take intoconsideration several factors which will effect pump performance.These factors include product viscosity, specific gravity, suction-and discharge conditions, temperature, the products tendency toadhere to the pump housing etc. Please ask for assistance andadvice so we can supply the most suitable pump for your application.

Please note that when a pump is fitted with Teflondiaphragms, a capacity reduction of up to 15% may occur.

How to read the curves
Example: The duty required is 10 l/min and thesystem pressure differential is 15 m (1,5 bar).

Step1: Plot the duty point, locate 10 l/min onthe bottom line and rise vertically to where it crosses
the horizontal 15 metre (1,5 bar) line. This is the dutypoint.

Step2: The air pressure required can beobtained from the black continous line which goes from left and drop to the right hand bottom line. Air pressure required is 3 bar.

Step3: The air consumption figure can be readof the broken line which falls from top to bottom.
Air consumption is 80 Nl/min.For 10 l/min at 1,5 bar we require a 3 bar pressure and 80Nl/min
of compressed air.