Mechanical seals vs packing seal on UL and FM fire pumps

[macki]

thread184-156726

"I don't believe that there are any U.L. Listed nor F.M. Approved fire pumps with mechanical seals"
my question is why not? anybody know the reasoning behind this ?

 

[cdafd]

Not sure if this answers the question or part of it

Check 3.2.7.2 Mechanical Seals

http://www.fmglobal.com/assets/pdf/fmapprovals/1319.pdf

Extra::

http://www.slideshare.net/143chandu/nfpa-fire-pumps-requirementation

 

[macki]

thanks cdafd, the link you posted is for horizontal end suction, do you have a link for vertical pumps.

 

[PRinspector]

CDAFD,

Thanks for the PP slide. Very informative.

Regards
Lou