There is a kind of trap with the rather strange name of ‘Temperature Control Trap’.
The main feature of the temperature control trap is that it can set the condensate temperature discharged.* By causing the condensate to pool in front of the trap, it becomes possible to discharge the condensate at a much lower temperature than the original steam, for example at 60 °C or 80 °C.
Other than certain trace applications, there is essentially no application in which it is desirable to have condensate pool. Condensate is the arch enemy of the steam main line. At TLV, we make the following clear distinction: