Pressure gauges are protected from steam condensation in a regular boiler by using a siphon where steam condenses and prevents steam from going further up to the gauge.

However in a vacuum steam boiler when the boiler is re pressurized after use the pressure would push the water in the siphon up to the vacuum gauge.

I currently dont use any siphon and my vacuum gauges are far off (from condensation I guess) after a few boils, how can I prevent that ?

  • $\begingroup$ Something like this? ultraeverdryonline.com.au $\endgroup$ – Amir Apr 9 '16 at 11:41
  • $\begingroup$ condensation has a mysterious way of messing up the bourdon tubes of pressure gauge. These tubes are made of metal already, so it's not a matter of surface tension/wetting I believe $\endgroup$ – Manu de Hanoi Apr 10 '16 at 15:39

Have you tried a gauge guard? It's a simple diaphragm that allows pressure to transmit, without the liquid crossing the barrier.

enter image description here

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.