Vacuum systems

Orion1102

I have a question regarding vacuum levels for a given system.

Is there a formula or some kind of standard for a given vacuum?

Example : I have a job site with 2 large cleaver Brooks boilers whose associated vacuum system is running at 29" ( inches)

Is this normal? To much?

How do I know?

What level ought it be?

Is this current level likely to cause a problem?

nicholas bonham-carter

vacuum questions

while you are waiting for a response from the sages of steam here, you could do a search here for "vacuum", and it will probably give you some links in the library, and other threads.

is this 1-pipe, or 2-pipe heating?

vacuum systems are a favorite topic, so you will probably get quite a bit of interest!--nbc

Brad White

29 inches is practically

a perfect vacuum, too high for any but deep variable vacuum systems. That system should heat up very, very quickly. Variable vacuum systems such as VariVac operate between 6 and 25 inches normally, the higher vacuum during warmer weather produces cooler steam, in the range of 140 degrees. Cool.



A typical constant vacuum system such as I have seen will operate at between 6 and 10 inches Hg.

However, if you can maintain 29 inches, dang, that is a tight system, good test.