I see that 220.127.116.11 of API 610 states that thrust restraints are required for expansion joints installed at pump discharge for VS1 and VS2 pumps but what about the suction side or other pump types? Are API 610 pump casings designed to transmit axial pressure thrust force to the support structure and if so, how much? I understand that it is typical to include tie rods to restrain this force but I am curious about suction side expansion joints without tie rods or cases in which the piping on the other side of the discharge expansion joint is anchored. I am not sure if allowable nozzle loads are relevant here since the axial thrust due to an unrestrained expansion joint occurs in the pump casing which transmits it to support structure.
Thanks in advance
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