Vacuum gauge on 3/16 natural vacuum

[MDR Maple]

I just set up my line to ncluding the vacuum gauge at the highest point. Is it ok to leave the gauge permanently installled, or is it typical to only install it to check the vacuum, and then remove it?

[DrTimPerkins]

Is it ok to leave the gauge permanently installled, or is it typical to only install it to check the vacuum, and then remove it?

On a 3/16" system you should leave it permanently installed. If you open the tubing system to put the gauge on the line, it'll suck air in and you'll get an incorrect reading (less vacuum) until it stabilizes again, which could take a while. Alternatively, you could have a gauge and a tee/valve setup so very little air wouldn't be pulled in, but that would end up costing a good bit more and still not give the best reading.

Keep in mind though that these gauges aren't typically meant to be used outside, so putting the gauge in tightly sealed plastic baggie after it is installed will preserve its lifespan a good bit.