by your whole house water valve, there are two valves,

来源: laoxuliang 于 2014-07-15 10:58:00 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (57 bytes)
回答: GAs Water Heater 由 joeyli 于 2014-07-15 09:52:44

the one nexte to the water valve is the pressure control.

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