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that'S good Duwe6, I get the same way of mind than you after few verifications. That confirm me its better to use welding fitting or to weld a flange on the casing than using thread like High Pressure rules... I don't want to imagine how hard it could be to find parts for a 10 000pisg system...

moltenmetal , Thanks I see I'm at higher than class 2500. Do you know a reference showing how to determine the class? Mechanical Engineer

Thanks Duwe6, Where did you find "High-Pressure" start at 4000 psi? In the B31.3 ? Thanks Moltenmetal, In my case I'm at ambiant temperature and my fluid is water... Mechanical Engineer

So what I understand is I'm between a "normal" pressure and the High Pressure... The problem I have with that is I want to modify a little manifold bloc valve. The owner doesn't want to weld a piece of pipe (diameter 1 inch). So I saw in the Chapter IX the specification for using thread and...

I try to understand if we can determined if we design an high pressure system when the pumps before the piping push at 3500 psig? Has it a value to determined when it's a High Pressure Piping Design, like specify in the B31.3, Chapter IX? When the owner doesn't know... Is high pressure at 2...

I suggest you ask few question directly to the ASME org. Hope that could help you. Mechanical Engineer

I need a dry surface for doing my maintenance and reperation... But it was a good idea, thanks! Mechanical Engineer

Thanks for your comments Mike. Dimension will not be always the because my goal is to repair a "receiver". But the receiver is about 6 ft x 4ft x lenght to determine. I like your comments that help to think and verify ideas - solutions. Mechanical Engineer

Thanks BigInch Mechanical Engineer

I add it a sketch to show what I want to do. The floor is with ceramic... Mechanical Engineerhttp://files.engineering.com/getfile.aspx?folder=1899a630-e3ef-41f1-b34f-e3d31e5e0746&file=to_isolate_flow_of_fluid.pdf

Yes, not easy to explain. Is like to have a river (my process which I talk) and to want to not stop the river and to find a way to be able to go do work on the floor of the river. An other example, it's like to work in the middle of a lake without emptying the lake of its water... And to make...

I search somenthing to make a good wall without leak of fluid...

Do you know any technology which could be use to deviate fluid in a big fluid receiver open to the air? I mean the fluid has a flow higher than 6 000 m^3/hour and we don't want to stop the process for going to work on the floor receiver (maintenance). Pressure should be high and we don't want...

Guys, is someone know if it has a kind of crn (like in Canada) to respect in the Country of Gibraltar (near Spain)? Or maybe we only need to respect the ASME VIII ? Thanks!

yes we can ;) I only try to understand how react Pipe-flo! haha!

My source is 20psig at 0 ft (like a tank) the output is 100gpm

Well hear an exemple : pipe 1: 10 000Ft, diam. 8 inch, Steel, Roughness 0.0018inch, Schedule 40, elevation 0 to 0ft With fluid : Water at 15.6C, pressure 0psig, density 999 and visocsity 1.121. Design limit: velocity 0 to 200ft/s, pressure -14psig to 1000psig pipe 2: 10 000Ft, diam. 8 inch...

I mean is Pipe-flo able to see the difference of viscosity? or the difference of density?

Someone know if PipeFlo consider the difference between viscosity or density... I've done test and for 2 systems identical + one at 20 cps and the other at 200 cps... I find the same pressure and flow ... Is PipeFlo not enable to see or simulate the difference? Thanks!!!

An other option I see, is to inject a sequence of hot gaz in the flare during winter... but my question for now is which gaz??? I flare Hydrocarbone + H2S ++++