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Posted by HeatPro on January 13, 2010 at 15:08:09:
In Reply to: difference between water and steam radiators? posted by Steve Silca on January 13, 2010 at 10:17:32:
You can identify a radiator meant for steam use only as one that needs no manifold across the top, just at the bottom, because low temperature steam rises above air, so the tops are without a manifold through the top of the sections as they are unnecessary for steam.
A radiator for water has to allow circulation, so requires push connections across both top and bottom of each section, so the water can circulate to top and bottom.
A radiator with manifolds across top and bottom could be used for either steam or water. As that is possible, manufacturers of radiators will have a 1/8th tap in the end section above the bottom manifold to accept a plug or air vent for either use.
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