The product is made and supplied with the capacity of being self-priming.
However there are cases in which the self-priming capacity is not necessary to use self-priming pumps. During priming the pump obliges part of the water already under pressure to return to the suction part until a pressure value is reached at delivery whereby the system can be considered primed.
At this point the recirculating channel closes automatically. This phase is repeated each time the pump is switched on, even already primed, until the same pressure value that closes the recirculating channel is reached about 14psi (1 bar).
When the water arrives at the system intake already under pressure, it is possible to force the closure of the recirculating pipe, losing the self-priming capacity.
This obtains the advantage of eliminating the clicking noise of the pipe shutter each time the system is switched on.

To learn more about this topic, you can register free for our online course E.syline organized by D.Training, aimed at installers, plumbers or interested people. We recommend you read the E.sybox Mini 3 instruction manual (also available on our DNA software) for all information on the use of the product.