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Posted by jawad on September 17, 2004 at 01:05:13:
In Reply to: Re: Fusible plugs posted by mike reese on June 03, 2004 at 04:11:34:
: fusible plugs where designed for solid fuel boilers that dont have any low water cut off except for the operator to stop the supply of fuel. when a plug fails due to excessive temp. the lead is pushed out by steam pressure and fills the furnace full of steam hence smothering the fire in theory. the ones i have screw into the steam drum from the waterside. threads are 3/4" ntp.
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