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vents in the house

acl10 Member Posts: 349
I am on the 2nd floor. I have Hoffman 40s and Gorton 4 , 5 , 6s The hoffmans close but the Gortons keep hissing. Most are new and I checked all. so they are all in good condition. The pressure in the boiler is set at .5 on the pressurtrol.


  • newagedawn
    newagedawn Member Posts: 586
    whats the question?
    "The bitter taste of a poor install lasts far longer than the JOY of the lowest price"
  • acl10
    acl10 Member Posts: 349
    Is that the way its supposed to be. I thought all the vents close at a certain point. The only ones that are closing are the very small Hoffman 40s does something have to modified
  • Mike Cascio
    Mike Cascio Member Posts: 143
    The gortons are good vents but they have the tendency to hiss/spit as the pressure creeps up to the cut out. Part of it has to do with how the float comes up to close the vent. Gortons close at a lower temperature than the hoffmans. Also the hoffmans close with a positive click. These vents tend to be quiet until they close.

    I like ventrite vents #1 and #11 the old dole 1a for a little more venting capacity.