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Doc

06:42AM | 10/02/03
Member Since: 10/01/03
5 lifetime posts
Bvhvac
I am trying to replace some bad pipes on my boiler which is antique to say the least. The problem is I don't know how to figure out which psi rating relief valve to get. I know there are several factors in determining this but have no idea what they are. The old relief valve was not really functional so I can't start from there. Can someone walk me though the process of finding this out?

To avoid confusion:
Water from out side to fill the system > valve to stop water flow > small section of pipe > relief valve with run-off pipe > boiler

Doc

08:55AM | 10/02/03
Member Since: 10/01/03
5 lifetime posts
OK, so if I were to fill my system less the valve. Bleed the radiators and then take a psi reading, is there not a formula I could use to find out what the psi would be at X temp?

Doc

09:20AM | 10/02/03
Member Since: 10/01/03
5 lifetime posts
Considering how it works and that I can't find an inline relief valve, would a t and regular relief valve not work?

Doc

10:40AM | 10/02/03
Member Since: 10/01/03
5 lifetime posts
Once again, much thanks. You are the boiler-master/ninja/king!
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