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Posted by Dan on November 05, 2010 at 09:36:51:
In Reply to: Re: No backflow valve posted by Dan on November 03, 2010 at 09:23:13:
Does anyone happen to have a particular brand backflow valve that they would recommend?
: Thanks HeatPro--I will definitely be adding a backflow valve into the system while I have it down doing the other repairs.
:
: : It is usually code to have one when the cold water feed line is hard-piped to the boiler. If the boiler is hose-filled with a disconnected hose after fill, there's no need, as water won't backflow to the cold feed line then.
: : They might still be not there for boilers installed before the code change. It's a good idea to add one to keep the water system from boiler water, especially if antifreeze is added.
: : http://www.livepast60.com/heatpro/purgeairtree/documents/790D47AEEB4B6A2B51BF2E7764EE0FAB22E6E0B3.html