i also took the 1/2" drain cap off and replace it with a 1/2" elbow, then a short piece of pvc pipe to the edge of the trailer, and finally a 1/2" quarter turn valve. I used a hanger and plumbers support tape to hold the pvc pipe to the frame. I can now drain the tank just by reaching down and opening the valve without having to crawl under.
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2015 cardinal model 3825fl
2015 dodge ram 3500 dually
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