RE: Re: Valve seat / seal material

From: <Prasad>
Date: Thu Jul 04 2002 - 05:19:00 EDT

a note of caution...in case of ball valves, some clients object to glass filled PTFE seats with ENP Balls.

   -----Original Message-----
   From: NIRMAL MURARKA [mailto:Nirmal-Murarka@enc.ltindia.com]    Sent: 04 July, 2002 10:22 AM
   To: PipingDesign@yahoogroups.com
   Subject: Re: [PipingDesign] Re: Valve seat / seal material

   Glass Filled PTFT (GFPTFE) can be used up to 250-260 deg C safely. We have    used in plug valves in Sulphur Units.

                         "andoks_lichon"
                         <andoks_lichon@ya        To:
PipingDesign@yahoogroups.com
                         hoo.com.au>              cc:
                                                  Subject:  [PipingDesign]
Re: Valve seat / seal material
                         04/07/2002 08:30
                         AM
                         Please respond to
                         PipingDesign

   most of the literature on the ptfe put its temp limit at 160-170 c    tops for continuous operation. using it at 200C maybe inviting    trouble.

• In PipingDesign@y..., constant george <chris_geocon@y...> wrote:
  > I would say in this respect that PTFE should be the
  > best option. Regards.
  >
  >
  > --- "Rao V.T." <raovt@n...> wrote:
  > > hi! guys
  > >
  > > For the soft seated ball valves, the material for
  > > seat are generally
  > > specified as VITON,PTFE(REINFORCED),PEEK OR BUNA-N.
  > > For a temp range of 100-200c , which is the most
  > > effective service wise or
  > > cost wise.
  > >
  > > Regards
  > > V.T.Rao
  > >
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[Non-text portions of this message have been removed] Received on Thu Jul 04 05:19:00 2002