Yes it is a good idea to provide a washer.
Geoff
- In PipingDesign@yahoogroups.com, Gang Cvg <cvg_gang@...> wrote:
>
> Paul,
> It is an accepted practice, to provide a washer on the
> FRP SIDE OF THE FLANGE, to distribute the loads evenly
> over a larger surface.
> Cheers!
>
> C. V. Gangadharan.
> --- Paul Bowers <pbowers@...> wrote:
>
> > Here's one for you plastic/fibreglass piping guys:
> >
> > What might be reasons to provide Van Stone/lap joint
> > type connections
> > (FRP stub end and FRP backing flange) on an FRP
> > vessel instead of
> > built-up welding-neck-style flat-faces?
> >
> > (OK, the backing ring flange can be rotated for bolt
> > alignment - not
> > that important)
> >
> > Using VS/LJ just adds the need for an additional
> > spacer ring between the
> > vessel nozzle and the attached RF steel valve as far
> > as I can tell.
> >
> > Am I missing something?
> >
> > (Of course, everybody already knows that
> > accidentally overtorquing bolts
> > that join a stronger component to a weaker component
> > can end up costing
> > hundreds of thousands of dollars and serious project
> > schedule disruptions)
> >
> > Paul
> >
> >
> >
>
>
>
>
>
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Received on Sun Apr 01 17:38:00 2007