What can be welded nozzle allowable loads for 6 way polyester valves ? Is it strain sensitive!

regards,
sam

To be more specific, should there be only one set of FX,FY,FZ,MX,MY,MZ allowable for each welded end of any cast steel valve used for high temperature service like PRDS, PRV and also 3/4/5/6 way polyester valves for all types of operating loads or sets of allowables for sustained, thermal, occasional & test loads ?

regards,
sam

PS: Some valve vendor may say zero load from piping - then, will it be right for seismic qualification point of view!

Ask the manufacturer. If they specify zero loads, do not under any circumstances connect any piping to it.

Thanks for the reply,Sir!

Now, after carrying out FEA with some modifications in supporting, load has been accepted by the manufacturer.

regards,
sam