Pneumatic diaphragm pumps in dairy production
A diaphragm pump is a volumetric pump in which the product is pumped through the reciprocating movements of a flexible diaphragm (diaphragm). As a rule, such units are equipped with two diaphragms that operate alternately, which to some extent compensates for flow pulsations at the discharge pipe. The principle of operation is shown in the illustration below. First of all, it should be noted that the pump operates on compressed [...]
NPSH - What is it?
NPSH (Net Positive Suction Head) - Net hydraulic head (cavitation head). It is measured by the height of the liquid column at the pump suction and is measured in "m liquid column", or for water "m water column - m water column". This parameter is extremely important to consider when installing a centrifugal pump in a system. Definition: Pb = Atmospheric pressure, in metres;Vp = Pressure [...]
Diaphragm pumps in harsh environments
There are many different definitions of the word "heavy" in the dictionary, including "having a lot of weight" and "requiring a lot of effort". If we look at this term in the context of pumping equipment, the word "heavy" has two meanings: the characteristic of the product to be pumped and the conditions in which the pump will operate. It is worth noting at once that these concepts are not [...]
