Thanks for the response Christine!
I see how I can adjust the gasket parameters to bring down the flange thickness. My calculations originally had a 1" wide 1/16" thick, PTFE flange, and I can see how decreasing the gasket width drops down the flange thickness. There's nothing I see stopping me...
I've got a ASME Div 1 pressure vessel that needs to be designed for relatively low pressures (+10 psig to -2 psig, @ 275 deg. F) and I have a question about a flange that separates the cylinder from the F&D Head. The image below shows the location, so they would be able to pull the whole top of...
Good afternoon all,
Has anyone been able to model a vacuum relief valve in the software AFT Arrow? I have several tanks that will be connected to a vent header line and wanted to show a relief valve opening up if the vent header line vacuum level went below the relief valve set pressure.
The...
@LittleInch
It's +415 deg F, I should've dropped the - to make things easier.
It's a group 2.2 material from asme 16.5 so at the 415 F design temperature, the working pressure is higher than 150 psig. 150 is the stated design pressure so that's the max we'll look at for stress. They will do...
@GBTorpenhow
I should've done a little more research on flex hoses before posting, and I could've seen that parts of my question have been answered in old threads or manufacturer websites.
Thanks for the response though, that definitely helps narrow down the options moving forward!
Hello All,
We are looking at a process line from the bottom of a pressure vessel to the suction side of a PD pump. Here's a snapshot of the stress model. 20" OD vessel, 6" piping, reduces down to 5" pump nozzle. You can see the vessel at the top anchored from it's support lugs, and the PD pump...
Thanks for the feedback, it's good to know that it's an option. Hopefully, we can make the layout work without them and save some money/maintenance on the system.
Hello All,
I am looking at some steam turbine-driven pumps in a paper mill/recovery boiler feedwater application and have a few questions about the inlet and outlet piping.
The original system from the 60s/70s had spring cans on both sides and a whole host of supports that had been...
Thanks all for the great info,
After talking about this proposed layout, this will be routed more in line with the designs highlighted in B31.1 Appendix II for open discharge systems, with the piping going up instead of down to grade. Stress analysis using CAESAR will determine the thrust force...
I've got a sketch attached showing the layout and dimensions, it's a steam PRV with the discharge piping routing down to the ground level instead of exhausting upward. I'm not used to seeing a relief line routed like this so I just wanted to make sure I wasn't missing something. Are there any...
Thank you everyone for the great responses to my questions. It really helps provide some insight.
We will be getting a better picture of the existing vent header system in terms of layout, flows, pipe sizes, etc., and will be getting fan curve(s) for the thermal oxidizer.
For the truck loading...
I have a case where a truck is loaded with a liquid product, and the vapor displaced during the fill is routed to a thermal oxidizer. A bunch of tank and truck unload station vapor lines tie into a header leading to the thermal oxidizer.
There is a discussion about whether a blower is needed in...
