can anyone please advise how to protect the PTFE vlave packing and B/B gasket from damage during post weld heat treatment for both small /large bore piping mainly for bonney forge products.
appreciate your helps.
it's for low pressure steam condensate headers for steam tracing to keep the process line heated Δ p max / Δ p min = 4.5/2.5 bar , operating pressure 3.5/5.5 bar , max alawable working pressure -1 / 9 bar.
thanks alot TD2K & Emmanueltop,
burt what do you think regarding the attached types the best one to select for this case , if it compare with the Gestra BK45.http://files.engineering.com/getfile.aspx?folder=97af35f8-8b6c-4a47-a288-78dbb390e34e&file=HPTD_Page_2012.pdf
so 304L special & 310L special are acceptablebut why it's specified this special NI content specially NI > 9.5 % , WHY IT'S NOT 8% , low carbon and no MO content why also?
thanks alot metengr ,
the temperature for the nitric acidd procees various between 122 °F to 290 °F .
nitric acid with 60% concentration fed to the nitric acid storage tank
why the designer select material for pipe will used for nitric acid as 304L with special containt NI > 9.5 % , why he didn't select 316L which include higher containt of NI ?
I have a technical specification for steam trap type thermodynamic with material body A105, material of seat and cone S.S but it’s mentioned that the material of the thermal control element is S.S.
I am a new at the field of buying steam trap but my understand that is thermodynamic type disc...
