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Newbie question. Our PM conversion will have a grey water tank underneath, on the right side opposite the exhaust. It's going to be easiest and most efficient to route the grey tank dump outlet to the right side of the van. Given dump station layouts, are we going to regret that?
 

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We grey on the right and black on the left on our sprinter and have always been able to dump both. Will you have a hose? We installed 1 1/2" Valtera gate valves directly onto the tanks and then attached a cam&groove nipple. We have a 1" hose with the female fitting that we use to reach across or to put in the sewer at RV parks. Sometimes we don't need the hose:

https://youtu.be/PWaC33wxpQA
 

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We grey on the right and black on the left on our sprinter and have always been able to dump both. Will you have a hose? We installed 1 1/2" Valtera gate valves directly onto the tanks and then attached a cam&groove nipple. We have a 1" hose with the female fitting that we use to reach across or to put in the sewer at RV parks. Sometimes we don't need the hose:
https://youtu.be/PWaC33wxpQA
Thanks, that's good to know. Our RV experience to-date is all in Europe. It's all "aim and dump" there, no hoses involved. Just grey water, no black, since its all cassette toilets. Their ground drains (targets) are also way bigger, more like storm drain collectors. Very little marksmanship required. We'd like to do without a hose here, too, but it sounds like we should at least prepare for one.

Pull in the other direction?
Sure, but we are worried about swimming up stream in case queues always form to dump off the left side.
 

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2017 2500 HiTop 159 Cargo Van white.
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With a bit longer than just basic hose you should have enough reach to go around.
 
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