Regarding the inlet and outlet pressures of the pump
Thread Content
I suddenly thought of a question: the outlet pressure of a pump equals the inlet pressure plus the head. Within the pressure range that the pump can handle, can the inlet pressure be increased to any value, or is there a certain limit that cannot be exceeded?
Yes, in theory it is possible as long as the pump, seals, and other related components can withstand the corresponding pressure
Pumps have a designed pressure rating, so when selecting one, it is necessary to provide information regarding the inlet conditions – that’s one of the considerations. The pressure resistance level of pumps varies among different manufacturers. For conventional series of pumps, a single-stage cantilever process pump designed according to standard 3215 specifications should have a pressure resistance level of at least 300 lb at normal temperature (i.e., 5.0 MPa class).
For cantilever pumps, the axial force generated by high inlet pressure must be taken into account, requiring certain adjustments to the pump’s structure.