Two pipe steam pressure differential

Jack_6

In a two pipe steam setup what is the pressure differential between the inlet to the steam trap and the outlet? What I mean is I am running at 4psi, is the return side on the trap at 0psi? Should it be at 0psi? Should the return have less pressure than the inlet? Right now the pressure is the same on both sides.

Unknown

bad traps in the system.

> In a two pipe steam setup what is the pressure

> differential between the inlet to the steam trap

> and the outlet? What I mean is I am running at

> 4psi, is the return side on the trap at 0psi?

> Should it be at 0psi? Should the return have

> less pressure than the inlet? Right now the

> pressure is the same on both sides.

Unknown

bad traps in the system.

> In a two pipe steam setup what is the pressure

> differential between the inlet to the steam trap

> and the outlet? What I mean is I am running at

> 4psi, is the return side on the trap at 0psi?

> Should it be at 0psi? Should the return have

> less pressure than the inlet? Right now the

> pressure is the same on both sides.

Unknown

bad traps in the system.

The return side should be vented; no pressure at all.

Noel

Unknown

two pipe steam differential pressure

depends on how the two pipe steam system was designed.

Nearly all two pipe steam systems are designed and piped in a manner that the return side of the system is at atmospheric pressure.

Air in a two pipe steam system has to be released. The air is vented by air vent valves or a condensate receiver.

If you use air vent valves to release air from the system, depending on how fast air is vented from the system the pressure on the return side of the system will range from zero psig to nearly the operating steam pressure of the steam piping.

If the pressure in the return is at the same pressure as the steam side of the system you may have bad vent valves or you are looking at the pressure when all the vent valves are closed. This occurence will happen on a two pipe air vent system at the latter part of the heating cycle.

If you have a condensate receiver in the basement the vent on the condensate receiver may be plugged. In a system where the steam traps are bad steam will leave the vent of the condensate receiver and you will know that you have bad steam traps.

To answer your question difinetively I would need to know what kind of twp pipe steam system you have.


jake

Woody

bad traps

check the temperature on the inlet side and the outlet side of the trap and advise.