Hi vani,

For the simple blower, you doesn't want to follow NEMA requirements. Just try to reduce the forces and moments at the blower nozzle within 500kg & 500kg.m. Hi..Plz, check the pressure (10 PSI is an huge pressure for blower) Dont consider the absolute pressure in the pressure input column, only you have to consider gauge pressure. I have done the similar analysis for 1800 dia pipe, but for 850 mm wc..i considered only simple axial bellow with proper guides and supports, the loads are come well with 200kg & 200 kg.m but due to pressure thrust i got 1500 kg load in vertical direction, i consulted with the blower suppler for the 1500 kg and they confirmed the stability of blower for the 1500 kg, the system is running good now...vani once check the pressure.