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

    Apr 19, 2012, 03:48 PM
    Pool heaters
    I have a hayward 400,000 BTU gas pool heater, the inspector said I need to install a 3/4 pressure relief valve in the heater,, but what size, there's a bunch of them/
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
    Ultra Member
    		  
    #2

    Apr 20, 2012, 11:41 AM
    It would screw into a 3/4" hole and you will have a temp to match on old pop-off valve. It should be no more complicated than that.
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