[jeffba]

Oh and when you get the shutoff valve, buy the contractor pack. Then after you install your new Dometic, spin around and add shutof valves under the sink. Tehn if you have time add shutoff valves to the washer lines. and if you still have time add shut off valves under your kitchen sink.
At this point if you still have a shutoff valve do not go near DW with it. They don't have a sense of humor about that and it will not go well