CMBE model description CMBE 5-31-I-U-C-E-D-F.  I pulled this from a CMBE Technical Brochure and thought it would be helpful if you’re sizing against a spec that includes the option extensions for any CMBE model.  Also, it can help you get an idea of capacity by understanding the base model number such as like on the CMBE 5-31,  which the first number is the M3/H and the second is the Meters of Head that the pump will produce with 0 PSI incoming. A 5-31 is max of 22GPM and 44PSI in Imperial Measure.

* Please see attached identification for reference*