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Posted by Heatpro on December 16, 2005 at 20:11:33:
In Reply to: Re: Normal Slantfin Operating Temp? posted by Alex on December 16, 2005 at 17:53:13:
The pressure reducing valve does control the cold fill minimum pressure, but it is a fixed pressure, not regulating pressure higher than its setting. Here is a full explanation of that:
http://64.226.150.132/hydronic/service/purgeair.htm