boiler expansion tank

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    • #277185
      MasterPlumbers
      Keymaster

      I was recently asked why some expansion tanks don’t have a sightglass. I don’t know the answer, does anybody know why?
      Thanks

    • #295657
      DUNBAR
      Participant

      The design doesn’t call for such a need.

      The sight glass itself would prove to be a potential leak down the road with susceptibility to pressure.

      The schraeder valve does the same as a sight gauge, it detects how much air is against the bladder; water through this valve indicates that the bladder has ruptured.

      I doubt if they ever will make such a gauge, the design of the product now provides good reliability.

      I know this from a residential point of view, not commercial.

      » This message has been edited by DUNBAR on 08 March 2004

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