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1

Relief Valve Flange Inlet


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#1 Sara Owens

Sara Owens

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Posted 07 March 2019 - 06:28 PM

I have a relief valve sized for thermal relief that is on the upper deck. There has been a change of pipe class changed from 300# to 600#. the relief valve inlet is 300# flange. is it necessary to upgrade the inlet flange to 600#?



#2 Bobby Strain

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Posted 07 March 2019 - 07:33 PM

Only you have the information to determine. Check the design temperature and pressure to determine.

 

Bobby



#3 fallah

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Posted 08 March 2019 - 06:03 AM

I have a relief valve sized for thermal relief that is on the upper deck. There has been a change of pipe class changed from 300# to 600#. the relief valve inlet is 300# flange. is it necessary to upgrade the inlet flange to 600#?

 

Hi Sara,

 

Appears something is wrong in the pipe class change at the TSV inlet line, because the pipe class change is normally happen at the TSV outlet flange (if needed) and it would be downgrade rather than to be upgrade. Hence please recheck and upload a sketch of the relevant PID to get more precise response...






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