What can cause a trap to fail?
Steam cuts, dirt, or warped discs can cause the trap to fail open. This failure causes a steady stream of steam to be discharged into the condensate header. If a trap is allowed to blow, it can cause the premature failure of other traps discharging into the same condensate line by raising the pressure in the condensate discharge header. If there is air in the piping, this can cause a trap to fail closed which can create a dangerous condition. It is important to slowly bleed and drain all lines as they are energized so that both air and water are removed.