Re: check valve

Is there any possibility of pulsations in the flow? If you have a centrifugal pump, either type of check should be acceptable. But if you have a pulsating type flow or pump, the ball check may pound on its seat, and can amplify the pulsations, set up piping vibration or damage the check ball or seat. Disc type of check is not as sensitive to pulsations.

George McKinney
----- Original Message -----
From: "Lakshmi V. Narayana" <LNarayana@safco.net> To: <PipingDesign@yahoogroups.com> Sent: Monday, October 27, 2003 11:47 PM
Subject: [PipingDesign] check valve

>
> Dear friends,
>
> Instead of wafer type check valve(PTFE lined),PTFE ball type check valve
is
> being used for oily water service (3"NB) pressure 4KG/cm2 temp 44C . is
> there any negative impact in doing so. can anybody throw some light on
this
> .
>
> Regards
> LAKSHMINARAYAN
> MECHANICAL ENGINEER
> SAFCO
>
>
>
>
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Received on Tue Oct 28 11:10:00 2003