Steam boiler gauges

StillLearning

Hi all,

When replacing pressure gauges on steam boilers, what specs do you normally look for? Liquid filled or not? Regular duty or high temp rated?

Thanks!

MilanD

https://smile.amazon.com/gp/aw/ya/ref=yo_ii_bia_view?ie=UTF8&ac=bia&reorder_params=B00H9ZWLZG,115-0512942-7605063

This will be what you want.

Fred

If this is a residential steam boiler, we typically use a 0-3PSI gauge, like this one: http://www.valworx.com/product/low-pressure-gauge-25-0-3-psi . This gauge actually lets you see the actual pressure when running in the range a steam boiler should operate. Most local codes still require that you also install the typical 0-30 PSI gauge as well and you can do so by Teeing off of a pigtail (looped pipe) on the boiler. These typically have a built in siphon to protect them from steam but they should still be mounted on a pigtail for added protection. liquid/oil filled isn't required although my 0 -30 PSI gauge is oil filled. Just happened to be what was available when I replaced the old one. They just add some additional stability to the needle when there is a lot of vibration.