I've seen details showing beveled end pipes butt welded to orifice plate. The OP is not inside. I do not know if welds are too close together with this method (possible over-heating). This design option is sometimes used with titanium and nickel alloy piping. Also, it may be used where all-welded piping is required by the owner. Resizing can require replacement of metering run, or cutting out and replacing a small part, or making one cut and field-drilling OP.
Ben
From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On
Behalf Of tomcruz55
Sent: Monday, December 25, 2006 2:19 AM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Re: Orifice Plates and RTJ
>
> A possible alternative to the flanged joint is the welded-in orifice
plate.
>
> Ben
>
> _____
>
But how youre going to weld an orifice inside a pipe say with a
diameter of 4inchNPS and double random lenght? If access is possible i
guess thats OK. and how are u going to replace it, if the bore to dia
ratio has been change? I think i'll stick with a flange joint.
[Non-text portions of this message have been removed] Received on Tue Dec 26 01:23:00 2006
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