One cutoff valve is used in the newer configurations along with a one way valve. The one way is on the output of the water heater and looks like a standard pipe nipple. The one way is prone to failure. I removed the innards of mine and installed a by-pass using the old method.
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2011 Outback 277RL
2013 F250 XLT Crew Cab 6.2L
Bitter Gun Owner
Bitter Clinger
Armed Infidel
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