Well why dont you search - I think it is Wheatley check valve - and put out an inquiry based on the spec. You can do it just as easily as anyone else.
Cheers
Steve McKenzie
-----Original Message-----
From: Sajit Viswan [mailto:sviswan@tebodin.co.om]
Sent: Thursday, January 08, 2004 6:05 PM
To: PipingDesign@yahoogroups.com
Subject: RE: [Man.Distr]Re: [Man.Distr]Re: [PipingDesign] Swing Check
Valve
The design document suggests a certain type (brand) of the check valve, "Wheatly"
Sajit
-----Original Message-----
From: Paul Bowers [mailto:pbowers@pipingdesign.com]
Sent: Thursday, January 08, 2004 7:46 AM
To: PipingDesign@yahoogroups.com
Subject: [Man.Distr]Re: [Man.Distr]Re: [PipingDesign] Swing Check Valve
I think to do an in-service internals replacement you'd need a duplex setup such as I've seen with metered city water supply systems, but my memory is fuzzy on this. It looks like there might be a spec misunderstanding or confusing writing as Steve suggests.
Paul
> Hi Sajit
>
> I have never seen a swing check that permits "in service swing
replacement",
> and I doubt if there is any such thing as it would need two additional
> sealing arrangements (valves) plus body drain. Perhaps the spec writer
means
> "in-line disc and body seat replacement"; i.e. it is not necessary to
remove
> the valve from the pipeline in order to replace the sealing/wearing
> components. Also I am not aware of any part of a swing check valve called
a
> swing. You may wish to query this with the spec writer.
>
> A note of caution; most swing checks have a hinge pin that is removed from
> the side of the body. Side clearance is required to remove the spindle,
> otherwise the body may need to be removed from the pipeline.
>
> Cheers
>
> Steve McKenzie
>
>
>
> -----Original Message-----
> From: Sajit Viswan [mailto:sviswan@tebodin.co.om]
> Sent: Wednesday, January 07, 2004 6:59 PM
> To: PipingDesign@yahoogroups.com
> Subject: RE: [Man.Distr]Re: [PipingDesign] Swing Check Valve
>
>
> The PID calls for this requirement. "Full bore check valve with external
arm
> shall be top entry and allow swing replacement in service". The line size
is
> 18". There are block valves shown across it with a drain d/s. I believe
that
> this does not imply that the block valves have to be closed and then the
> swing taken out for maintenance, which then is an ordinary check valve
with
> only an external arm or a dash-pot.
>
> Sajit
>
> -----Original Message-----
> From: rajendra bajikar [mailto:rajendrabajikar@yahoo.com]
> Sent: Wednesday, January 07, 2004 9:30 AM
> To: PipingDesign@yahoogroups.com
> Subject: [Man.Distr]Re: [PipingDesign] Swing Check Valve
>
>
> Dear Sajit,
> Is this a one time problem or regular? What is the line size? Could you
> please elaborate?
> Regards,
> Rajendra Bajikar.
>
> Sajit Viswan <sviswan@tebodin.co.om> wrote:
> Is there a check valve that allows swing replacement while in service?
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