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Old 11-07-2010
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Bill Pape Bill Pape is offline
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Join Date: Jan 2008
Location: Commerce
Posts: 11,673
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Yep , Ya need Air

Sure sounds like the purge valve, It is a high quality brass valve, located at the hot water tank. Many have been cleaned and lubed with success. The gaskets are re-usable
Remove the two square ends, with four screws, clean, & lube with plumbers silicone grease. Several O rings, plunger & spring. There is also a few check valves in the system, but a little more difficult to access.
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1988 FC, Silver Edition
Commerce, Michigan
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