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Can you replace a air cush expansion tank with a bladder tank in

Is the unit piped properly? Is the expansion too small or located correctly? Check with your supplier for specs and guidence. The auto feeder could be the problem, but I don't think so.


  • Scott MackScott Mack Member Posts: 1
    boiler keeps blowing off

    My old cushion type tank was making noise so I thought it was shot. I replaced it with the proper size bladder tank in the same location as the cush tank and now my pressure climbs at peak heat until the blow-off lets go. I closed off the auto fill and cycled the boiler and it gets up to about 26lbs. but does not blow off. Is it a bad auto-fill? Is the bladder tank ok in the same location as the old cush tank or should it be re-located to in line with a scoop and auto vent? Going crazy in the cold , any body, please help.
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