orifice flange connection
orifice flange connection
(OP)
ok, I see that std orifice flange tap is 1/2 npt, which is easily changed to socket if desired. what if you want 3/4 socket? I see that on many P&ID's, but it looks like it will violate min weld size near the flange facing edge. how do you get around this requirement for weld size?
last, what are the downsides, if any, to just using a male by tubing adapter and coming off the orifice flange with the instrument tubing, eliminating all hard pipe off the orifice flange?
thanks in advance,
mark
last, what are the downsides, if any, to just using a male by tubing adapter and coming off the orifice flange with the instrument tubing, eliminating all hard pipe off the orifice flange?
thanks in advance,
mark





RE: orifice flange connection
Normally we want piping specification a.k.a. line class valves as the first block between the process and the instrument. The issue regarding socket weld fittings is related in that many piping standards require a weld-end valve instead of threaded connection for the first block. At that point you can direct connect the manifold valve, or close couple the instrument using tubing. Compliance with ASME process piping standards could be an issue with eliminating the first block valve.
John
RE: orifice flange connection
thanks again
Mark
RE: orifice flange connection
RE: orifice flange connection