In the previous version of API 17D there was a specification for a "Fluid Coupling (Pressure Balanced)" that stated that a Multiple Port Coupling could be made by repeating dimensions C and D which would give a port spacing of 1.37", unfortunately it also has TYP against dimensions B, C and D...
Anyone recognise this symbol?
It looks at bit like some sort of Pressure Sequence Valve but the kink in the right hand arrow is confusing me.
Thanks
Peter Sleethttp://files.engineering.com/getfile.aspx?folder=952278b4-7b42-43f4-9419-8661f5039250&file=symbol.JPG
Can anyone tell me why the Global criteria required factored load combination in table 5.5 is higher than the local criteria one and could be higher than the hydrostatic test one.