(no subject)

As far as I know, globe valves have only one pattern; that of an "S" shaped flow (see http://www.pipingdesign.com/drawings/globesection.jpg). This configuration is similar to a piston-check valve (http://www.norriseal.com/pdfs/NOR166.pdf) or a lift-check (www.worldwidemetric.com/products/valves/din/dn4615.pdf).

As Geoff says, check valves are manufactured in many different flow patterns, among them are swing, tilting-disc, ball, wafer.

I hope Ravi is not choosing whether to use a globe or check valve, because they perform different functions!

Paul
===

> It depends upon the type of valve. There are different patterns of globe
and
> check valves. Also check valves occassional are fitted with springs and/or
> counterweights. Valves common to the water industry are a little more
straight
> forward. Globe valve losses could be 20 * F and check valves 50* f where f
is
> the Darcy Weisbach friction factor.
>
> More data is available from Flow Resistance A Design Guide for Engineers
by
> Idelchik or the similar text by Miller.
>
>
> Suggest you get the data from the manufacturer.
> ---------------------------------
> hi friends
> iam ravi kumar studnet of SAEIT(bhel trichy). i have one doubt on
valves.
> whish valve is having less fricitional losses eaither GLOBE or CHECK valve
and
> why?
Received on Fri Jun 13 00:03:00 2003