Mystery Water Inlet

[Shallowsport]

Hey guys, I’m a brand new toy hauler owner. Just purchased a 2008 Sandstorm and I’m trying to figure out all the bells and whistles. After walking around the coach I have identified the fresh water tank fill and the city water inlet. I have a third inlet and I can’t figure out what it’s for!?! Any help would be greatly appreciated. Thanks in advance!

[Podivin]

Could it be a black tank flush??

[Clomok]

Originally Posted by Podivin

Could it be a black tank flush??

Beat me to it...that is your black tank flush

[Shallowsport]

Originally Posted by Clomok

Beat me to it...that is your black tank flush

If I hook up a garden hose to it and open the sewage valve water should come out, correct?

[Clomok]

Originally Posted by Shallowsport

If I hook up a garden hose to it and open the sewage valve water should come out, correct?

Yup[emoji106]

[R2millers]

I would test and verify if it's the black water flush. If so, label it and make sure you use a separate green our black hose for flushing.
It's Obvious but don't use your freshwater hose for flushing.

I would also recommend that you buy two 3/4" "hose thread" plugs to cover both of those. The freshwater inlet has a one way valve, that if it breaks while dry camping, will pump your tank dry if not detected. Also good to keep dirt out.

Likewise, another plug on the flush will seal up that exposure to the black tank. Likewise, use another color to not mix up using the plugs.