How Do I Find a Steam Leak

Check the main vent of the system to locate a leak. 5. If there are no leaks near the boiler, check the radiators in each room. Look for signs of water around the hand valve, at the connection of the steam pipe to the radiator, and at the air vent on each radiator.

Is leaking steam always visible?

Live steam is invisible, and when a trap is leaking the short distance of space between the pipe outlet and visible vapor will tend to be clear and of relatively higher velocity and force. If the vapor seen is lower velocity and appears visible immediately at the pipe outlet, then it is most likely flash steam.

How do I know if my steam trap is leaking?

Checking your condensate return pumping unit is a good start. If there is steam coming out of the vent under pressure (not flash steam) – that is a good indication that you have one and probably more than one leaking trap. TEMPERATURE… Some people feel that a hot return line from the trap indicates a leak.