Welcome to the forum. I believe there is a second valve. The one under the sink is installed by Keystone, the other one is installed by the refrigerator maker since it was meant for your house not an RV.
Where it is exactly, I’m not sure but I’m willing to bet it’s near the back, bottom of the refer. I have been known to be wrong, so it might be best to either go hunting or wait for another member that has that floor plan to reply.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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