Pre load on cover bolt
Pre load on cover bolt
(OP)
Hi everyone i'm new here.
A courtesy, i need to calculate the preload on the bolts connecting the pump to his cover and to pinping.
Do you any code that would help me? or if you have any formula.
Thx
Bye
Rob
A courtesy, i need to calculate the preload on the bolts connecting the pump to his cover and to pinping.
Do you any code that would help me? or if you have any formula.
Thx
Bye
Rob





RE: Pre load on cover bolt
Your best bet would be to check the pump manual or contact the manufacturer for the tightening procedure.
RE: Pre load on cover bolt
If the later search the posts, there was a long thread last week that dealt with this - but basically anything you calculate will be an educated guess.
ISZ
RE: Pre load on cover bolt
As the others have said, you'd need to be more specific in outlining what your exact need is.
If the joint is pressure boundary, we commonly use ASME VIII, which will tell you the required bolt preload. However there are also many other more sophisticated methods.
RE: Pre load on cover bolt
So, I'm working for a pump facility, and I need to determine the preload on bolts on the flanges between pipeline and the pump, and even the bolt assuring the cover to the pump for a variety of pressure and a variety of diameters and bolt.
I think that here no one has done this calculation before, and now I need it because is requested as documentation for a project, and I need to specify the proper torque on the bolt.
Maybe I will follow ASME as suggested, or even an EN norm as I'm writing form Italy.
thx to everyone.
Bye
Rob