For in-plant transfer duties, Diaphragm Hand Pump offers a simple solution.  

Just take suction and delivery tubes to respective vessels, and apply handle and the transfer gets done. 

It is used for siphoning of mother liquor, in intermittent plant duties, in smaller jobs and in batch chemical processes and as emergency standby.  

When duty conditions match, it forms a low cost substitute/auxiliary/stand-by to chemical process pumps such as Vanton Pump, Fybroc Pump, Durion Pump etc.