Thank you for your input gerhardl, in the plants we had designed and built in the past we have used SS valves with SS piping and FRP valves with FRP piping (for example piping for seawater service). Now we are working on a larger project, with fluids for what SS316 or FRP piping is acceptable...
Thank you for your answers.
Fluids are not flammable or combustible, by the way it is acceptable to have also the piping on FRP, but customer prefers Stainless 316, the point is that there will be more than 200 valves, and using FRP Ball valves vs. SS 316 makes a big price difference.
Thank again.
I am currently involved on detail engineering for a small chemical plant. Most piping lines would be SS 316L specification, since there is big price difference between Stainless Valves vs. Composite (FRP) Valves (Ball valves mainly), I just wonder what may be the disadvantage(s) to use Composite...
Thank you ScottyUK, I did not explain well what happened with the plastic one. It is not sealed and the spring chamber got deposits and stuck the paddle. And the same manufacturer does not have a sealed one on plastic, just in SS316. We have not found a good switch on plastic or PTFE yet.
We...
Where I work, we are looking for a Paddle Type Flow Switch to be installed on a 1" pipe line on a Seawater application. We have tried plastic and SS316 switches but they are getting corroded and they have stopped working. We think a switch made of Hastelloy C or Titanium should work, but have...
Regarding this post, previously I posted this one:
"Hello Everybody,
I would like to have help with suggestions on books or similar about how to make good PFD and P&I drawings, we already have the ISA 5.1 standard, but we would like to have additional information like books with several...
Hello Everybody,
I would like to have help with suggestions on books or similar about how to make good PFD and P&I drawings, we already have the ISA 5.1 standard, but we would like to have additional information like books with several examples for the different kind of situations that you may...
Hello everybody,
We are designing a duct system for hot gas (400 to 1,100 deg F), and we normally used Flanged Expansion Joints with the same thickness than the duct (1/4") in Carbon Seel construction, now we are planning to use Stainless and we need to made some changes in our standard design...
I would like to have information about how to estimate the approx. outlet gas flow for a LNG boiler (CFM or lb/hr), in my case is for a 3 MMBTU boiler, the manufacturers usually show a suggested stack diameter but no the approx. gas flow.
Thank you for your help
Adolfo Prieto