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Old 05-24-2016, 01:12 PM   #11
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My Rockwood 2604 shower drains into the black water tank. It is located right over the tank, and I am glad it is piped that way. Since I take very little water use showers (Navy showers), it really has minimal effect on filling up the tank, and helps keep the black tank solids soft.
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Old 05-24-2016, 05:57 PM   #12
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Sometimes, it really feels like they just plumb these things however they feel like doing things that day in the factory. Bowtie and I have the same unit, same capacities on black and gray, and same "what is plumbed where" setup. But they do seem very inconsistent with "what is plumbed where" from model to model. Hey, you may very well have a second gray tank. The only way to know for sure is to look up your specs. Or ask the factory rep.

Having had campers plumbed both ways, I do know that I like my shower draining into the black tank. The way it's set up, if it ever overflowed, the toilet would overflow before the shower would. So there's no way poo would ever overflow into the shower.
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Old 05-24-2016, 07:47 PM   #13
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i would rather not have it piped into the black because im mostly doing ATV racing and a lot of people are showering it fills up in no time and that's on 1 day trips mean while my grey tank is completely empty, maybe 1 gallon. i would rather have the option to use the black tank flush once im home to add water for emptying purposes. i just found another t handle behind the wheel just before the black tank t handle. looks like there's a 2" t handle that goes to the black tank and then there's a y fitting that goes to a 1-1/2 t handle anyone know what that's for?? it was open.
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Old 05-24-2016, 08:06 PM   #14
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Quote:
Originally Posted by breezyhillfarm View Post
Strange. My '14 27 HFX has two grey tanks. One for kitchen and one for bath shower and sink. Toilet only in black.
That's the way my 2015 Hyper 29HFS is setup.
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Old 05-24-2016, 08:09 PM   #15
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That's the way my 2015 Hyper 29HFS is setup.
WW
Mine is a 2014 you would think that would be something they would keep consistent. Looks like I'll have to pull the cover and investigate the plumbing.
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Old 05-25-2016, 09:14 AM   #16
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i would rather not have it piped into the black because im mostly doing ATV racing and a lot of people are showering it fills up in no time and that's on 1 day trips mean while my grey tank is completely empty, maybe 1 gallon. i would rather have the option to use the black tank flush once im home to add water for emptying purposes. i just found another t handle behind the wheel just before the black tank t handle. looks like there's a 2" t handle that goes to the black tank and then there's a y fitting that goes to a 1-1/2 t handle anyone know what that's for?? it was open.
Not sure what you mean by "use the black tank flush once I'm home to add water for emptying purposes." BTF should always be used with the black tank drain valve open, or the pressure buildup from the BTF could damage the seams in your tank. If you want to fill your black tank before draining, then close the drain valve, prop open the toilet flush valve, and run the water into it until full. BTF is for flushing/cleaning only, not filling.
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Old 05-25-2016, 09:23 AM   #17
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I always use the black tank flush to add a few gallons of water after I've finished flushing before going home. That allows 5-10 gallons of water to slosh around on the trip home before I dump all this into my septic system.
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Old 05-25-2016, 09:31 AM   #18
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Frightening.
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Old 05-25-2016, 09:46 AM   #19
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Taranwanderer,
I'm not sure I understand or share your apprehension of using the black tank flush to add water to the black tank?

Yes, there certainly is cause for concern if you happen to leave the black tank drain valve closed and walk away while using the flush but using simple common sense, adding several gallons to the tank to aid in flushing or adding a few gallons to the tank after flushing by using the black tank flush is no more harmful than your suggestion of propping open the toilet flush valve.
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Old 05-25-2016, 09:56 AM   #20
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The owner of the dealership where I purchased both of my campers (who personally does the PDI walk-through for all new camper purchases) told me that they've had multiple episodes of black tanks literally "blowing out at the seams" from people using the BTF with the drain valve closed. Why risk it? That's not what the BTF was designed to do.
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