Re: Internal Phenolic Epoxy coating

From: <M.>
Date: Wed Feb 06 2008 - 13:24:00 EST

I also agree with Melvin that internally phenolic coating valve is not needed. I just would like to add that all valve wetted parts to comply with NACE MR-0175 requirements since the service is sour

Khaled
--- MAIL MUG <melvin_magbanua@yahoo.com> wrote:

> I totally agree that you don't need a phenolic
> coated internal parts of the valve.
>
> Fro Sour service CC valve, say its a ball valve;
>
> Here's an example Ball VAlve Specs;
> The valve Body/Bonnet construction should be
> Carbon steel Forged/cast/welded or flanged and the
> material to ASTM A 105 or A 216 WCB/WCC or ASTM A
> 350 Gr.LF2.
>
> The ball construction to Carbon steel Forged/CAst
> + 0.003" ENP and the material to A105/A 216
> WWCB/WCC/A 350 LF2 + enp or A216 WCC + Ni.
> Boron/Hastelloy overlay 0.003"
>
> I can give a complete list of the Stem, Trunnion,
> Body seat ring, stem seal, spring and boby stud/nuts
> if you want. Contact me by e-mail outside the forum
> and I'll try to help you.
>
> Melvin
> mmag@chevron.com
> Mobile No. +1-201-693-4769
>
>
>

---

>
> Mohammed Aalamgeer <alamgeer5798@yahoo.com> wrote:
> I forget to mention that service is : SOUR
> CRUDE OIL
>
> Internal Epoxy coating required to prevent the C.S.
> valve body from corrosion.
>
> Regards
> Alamgeer
>
> --- "M. Engineer" <kahabib@yahoo.com> wrote:
>
> > First of all, Why are utilizing valve with
> internal
> > phenolic coating in crude oil service?
> >
> > --- alamgeer5798 <alamgeer5798@yahoo.com> wrote:
> >
> > > Material requirement for valve body is C.S. with
> > > Internal Phenolic
> > > Epoxy coating. But Manufacturing is supplying
> > valve
> > > body of S.S.
> > > In this instance Internal Phenolic Epoxy coating
> > > still required?
> > > I believe internal coating is not required!
> > > Anyone differ from this? please advice!
> > >
> > > The service is Crude Oil.
> > >
> > >
> > >
> > >
> >
> >
>
>

---

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Received on Wed Feb 06 13:24:00 2008