The self-priming pumps are mainly used for liquids with high-density level or presenting high vapour pressure such as acids, caustic soda and sodium hypochlorite or even alcohol. 

ARGAL offers 2 self-priming ranges, available in Polypropylene, E-CTFE or ECTFE+carbon fiber (Ex-proof) that operate with higher suction length and shorter priming times than traditional self-priming pumps. 

Discover them now...

        ELK                                 RHINO                

ELK - With capacities up to 40 l/min, the ELK peripheral self-priming pumps are particularly suitable for suction and delivery of chemical agents within very rapid priming times. ELK pumps are also reversible: by reversing the direction of rotation, the flow direction of fluids to be transferred is reversed. 

RHINO - The biphasic impeller mag-drive self-priming turbopump was conceived to prime both high-density fluid and high vapour pressure fluids. Reaching up to 17m3/h, they can drag acids up to 4 m of negative suction, such as sulphuric acid 98%, hydrochloric acid 33%, nitric acid, phosphoric acid, sodium hypochlorite, caustic soda...
 

How do self-priming pumps work? 

The self-priming process allows to carry the pumped fluid by aspiring air and then by collecting the liquid.

1 | STOPPING PHASE 

A small quantity of liquid is trapped into the pump to enable the next starting

2 | PRIMING PHASE

The impeller gives a proper circulation of liquids containing air by moving the air from the suction pipe to the discharge one in the atmosphere.

3 | PUMPING PHASE 

Once the air is removed, the tube is flooded with liquid, and the pumping phase starts.

Example of application

Here is a RHINO mag-drive self-priming pump installed and working efficiently in a garage to collect washing water solution laden with detergents, residues and oils - used during car washings - with capacities up to 17m3/h and negative head up to 6m.