Dc Posted September 7, 2004 Share Posted September 7, 2004 Does anyone know why radiators have the input valve at the top of a rad and the return valve at the bottom. In the UK both were at the bottom. Any help greatly appreciated. regardsdc Link to comment Share on other sites More sharing options...
Michael Posted September 7, 2004 Share Posted September 7, 2004 [quote]Does anyone know why radiators have the input valve at the top of a rad and the return valve at the bottom. In the UK both were at the bottom. Any help greatly appreciated. regards dc[/quote]On the old fashioned gravity systems it was more efficient for the circulation of the water on top and bottom connections normally on the cast iron rads, with the design of variable head pumps its very rarely done now.happy plumbing. Link to comment Share on other sites More sharing options...
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