In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
worn - as is the o-ring. Your system water is probably acidic which shortens the life of all components. Best bet might be to drain the system, install a complete new zone valve and while at it, clean the sstem with TSP or system cleaner. Rinse, refill with clean water and bleed all the air out. A new Erie or comparable Honeywell zone valve should be around 75-bucks. Lots of labor involved. This is one of the few areas that a homeowner might tackle if soldering is in your area of expertise. If not, the labor to do it all will be stiff; and rightly so.
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