ISG pipe pump whether there is suction

ISG pipeline pump is installed in the pipeline on an increase in the pump, is also a kind of centrifugal pump, usually in the pipeline water but the pressure is not enough to transport water to a higher destination, the use of ISG pipeline The pump is pressurized to reach the destination.
Is the ISG pipeline pump sucking?
Of course, but please do not misunderstand the two concepts of suction and self-absorption.
Self-priming refers to the process of pumping water from the lower to the pump chamber in the absence of water (empty tube) in the inlet line (the verb, self-absorption is an action and a process), only the self-priming pump Only with self-absorption function.
Suction - refers to the distance in the inlet pipe, but the import without positive pressure, the pump in the work of its imports can absorb much depth within the distance (quantifier, in length). All centrifugal pumps actually have suction, but the length of different, in short, the higher head, suction will be correspondingly higher, but no specific conversion standards. In general, the suction line of the ISG pipeline pump is not more than 4 meters without preconditioning without any auxiliary equipment.
After installing the siphon device, the ISG pipeline pump can actually operate as a self-priming pump, giving the self-priming capability of the ISG pipeline pump by integrating the siphon. But there is self-absorption pump, who will be so superfluous it