Brine concentration for pumps made from ductile cast

[BSMEclassof2012]

Hello All,

We are considering using a pump constructed with ductile cast iron components. Could you please confirm if there is a maximum allowable brine concentration for pumps made from ductile cast iron?

 

[EdStainless]

How about virtually none.

https://nickelinstitute.org/media/1724/materialsforsalinewaterdesalinationandoilfieldbrinepumps_11004_.pdf

Unless this is oxygen free (<5ppm) and cold I don't see plain cast iron lasting in the velocity and turbulence of a pump.