Hi fellow stressers!!

Why there is no horizontal reaction force in the PSV for relief load.
It's only shown in the vertical downwards at the outlet of pipe. (Refer to B31.1 Non Mandatory Appendix II figures)

But I have seen many stress engineers apply a thrust force horizontally on the valve centerline itself.

Can this be captured in transient simulation of compressible fluid flow with high mach numbers.

Warm Regards,