Dale, here are some pictures of the Ranco rebuild. The rubber seal shouldn’t leak at all, that’s the object of rebuilding it. The valve itself does not close off all of the water flow some will leak by so you will have a small amount of circulation.
http://www.pbase.com/dennygraham/ranco_hf_br&page=all
Denny Graham
Sandwich, IL


Denny G
Sandwich, IL