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    dinom1te's Avatar
    dinom1te Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 13, 2009, 12:11 PM
    Central Heating Layout
    I have a leak on my c h system , it's a pressure type valve near the cylinder after the automatic valve (with the little lever) the leaky valve has a small red cap on it . Its just before the water pump.
    Why would it suddenly start to leak (allbeit slightly )
    To change it how much do I have to drain down
    Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 13, 2009, 12:51 PM
    Is this a hot water system or a furnace system?

    If it is a boiler make sure you check the operating pressure and if to hign it can cause the valve to weep.
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