Vacuum breaker

[Sherifhosny]

Hello,

I am working on two steam systems, one of them is 10 bar and the other is 37 bar.
before the heat exchangers of each, there is a vacuum breaker installed. the thing is I can't find a vacuum breaker for the 37 bar system. so is there some other solutions to use instead of vacuum breaker at high-pressure steam lines?

 

[mk3223]

Need to understand more detail of the system for your post.
But, if the equipment and piping are designed with a full vacuum condition, the system may not need a vacuum breaker.

 

[MortenA]

i agree with mk3223 - the high pressure system can most likely handle full vacuum.

 

[Sherifhosny]

the vacuum breaker is there so as to protect against this scenario:

there is a temperature control valve at the steam inlet, when it throttles, the pressure will drop, maybe it can reach vacuum pressure, so it start sucking condensate, that is why the vacuum breaker is installed.

you can see how it is installed in the attachment

 

[danschwind]

Check the HX manufacturer's documentation for the maximum vacuum allowed (at 37 bar I expect it to be full vacuum as the other posters have pointed). As they said, if the equipment can handle full vacuum you may dismiss the installation of the vacuum breaker.

Daniel
Rio de Janeiro - Brazil