We had to replace one on our 2016 39DBRS3 while we were on the road and the tec had a difficult time. Ours was not the standard Valterra valve configuration. It was some odd valve with no identification markings. We were in a location where the sewer pipe firing were not readily available so he had to cut and drill to get the new Valterra valve in. I would suggest you check out your particular instillation before you order valves. Dick
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