We had a leaky black valve on our last (SOB) trailer and fixed the problem with a Valterra valve at the end of the dump pipe. This protects against gray tanks leaking too. When we bought our new Monty and started to make it "ours", we added a Valterra valve right away. This is just as a precaution.
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2017 High Country 305RL
2015 Ford F-250 Super Duty
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