Can the air pre-charge pressure of CIMM expansion vessels be modified?

Yes, it is possible to modify the air pre-charge pressure of CIMM expansion vessels with cautions. We suggest to ask to an expert and authorized personnel to carry out the operation. Being aware of the specific features of the system or plant where the vessel has to be or is installed, the pre-charge pressure of an empty CIMM vessel can be increased up to a maximum of 3.5 bar and can be reduced to a minimum of 0.5 bar.