bleed valve leaking

Discussion in 'HVAC Heating & Cooling' started by r lawson, Sep 6, 2008.

  1. r lawson

    r lawson New Member

    Messages:
    6
    new runtal towle warmer bleed vale leaks w/30 psi air test
    do these radiators incorporate a float ball inside also, actuated by the water level?
    thanks any help would be appreciated
    Rita
  2. nhmaster

    nhmaster Master Plumber

    Messages:
    3,189
    Location:
    S. Maine
    Are you saying you put 30lbs of air on the system?
  3. r lawson

    r lawson New Member

    Messages:
    6
    30 psi in the loop befor connecting to manifold
  4. Furd

    Furd Engineer

    Messages:
    446
    Location:
    Wet side of Washington State
    You may have a vent with a hygroscopic disc and if so then yes, it will leak slightly on air pressure. If you have a float-type vent it will definitely leak with air pressure.
  5. Redwood

    Redwood Master Plumber

    Messages:
    7,453
    Location:
    Connecticut
    After much research I found the answer in a copy of...
    "Common Sense" Written by Thomas Paine January 10, 1776

    The vent is designed to eliminate air from the system.
    Therefore it would be an entirely reasonable assumption that it would not contain the air pressure in the system during testing unless it was capped or otherwise prevented from doing its intended job.
Similar Threads: bleed valve
Forum Title Date
HVAC Heating & Cooling Where to add bleed valve? Oct 18, 2009
HVAC Heating & Cooling Hydronic baseboard bleeding problem Oct 6, 2009
HVAC Heating & Cooling Bleeding zones in hot water system Dec 24, 2007
HVAC Heating & Cooling radiators still only bleeding air...ideas? Nov 19, 2007
HVAC Heating & Cooling radiators only bleeding air, no water Nov 19, 2007

Share This Page