gray water tank - Wolf Creek 850
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Nov-21-2014 01:03 PM
Wondering how long it should take to drain our gray water tank (tank capacity = 19 gallons). For our black tank it takes about 2-3 minutes to drain but gray tank takes significantly longer, maybe 8-10 minutes. The gray tank usually starts off fast and it reduces to a slow trickle for a long time. We wonder if there's stuff there in the pipe blocking the flow.
I must mention that we did have issues with the gray tank valve on our first night, luckily we were still at the dealership's lot. It wouldn't close completely. The next day we had the technician stick in a long wrench and he pulled out some debris from when they construct the camper.
We are wondering if the long slow trickle is caused by blockage. Since this is our first RV we don't really know how long it should take to completely drain the gray tank. Is the slow drain normal for the gray tank?
Advice and help appreciated! Thanks
W
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Nov-22-2014 03:10 PM
Going to phone and talk to Mike at Northwood about it next week. We'll see what he says.
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Nov-22-2014 02:16 PM
Unless you have GOOD reason to believe there's an object causing a partial blockage, I wouldn't go to too much trouble looking for something. Wouldn't be worth it anyway unless you have access to a sewer camera.
I agree that there needs to be closer attention paid to fit and finish on these campers. The sloppiness and utter carelessness that I've discovered behind the surface is appalling and downright frustrating--especially considering how much they are now asking for them.
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Nov-22-2014 02:09 PM
Nolan
2015 Wolf Creek 850 Thermal Pane Windows, Oven, Reinforced Anchor Bolts, 200w Solar, Torklift Tie Downs, Fastguns, Stableloads
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Nov-22-2014 12:48 PM
If it's a cut out disc blocking the flow, it might be impossible to pull out of the pipe from the outlet. argh... PITA is right!
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Nov-22-2014 12:36 PM
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Nov-22-2014 12:35 PM
HappyKayakers wrote:
I would suspect a tank cutout still in the tank.
This^^^^^
Grey tank drains are typically 1 1/2" dia. (even though they may connect to main 3" line)
So grey will take a bit longer just do to size of pipe BUT the flow should be basically the same until almost empty
When tanks are installed openings are cut into tank to connect vent/drain/dump lines.
Sometimes the cut-out discs fall inside tank and don't get removed.
The discs can float around until draining tank..then they can be pulled down to outlet and obstruct drain.
Stop draining....they float until next dump.
PITA the remove.
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Nov-22-2014 12:19 PM
joeshmoe, it's unacceptable that they leave any debris at all especially in the tanks/pipes. Northwood needs to get on top of their QC.
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Nov-21-2014 04:11 PM
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Nov-21-2014 02:47 PM
I think the grey tank outlet dia. is 3". It would take a sizable blockage to stop it. However, As you discovered, there very well could be a layer of material build-up still inside from construction, causing it drain slower when the level gets closer to empty.
BTW, I had the same problem with the blade not fully closing on the black tank. Some debris (ABS shavings and whatnot) partially filled the groove where the blade seats, causing it to not seal.
2005 Ford F350 SRW SuperCab/LongBed 6.0 Powerstroke
QuickTrick's Towing Tune
Torklift Tie Downs/Fastguns/Upper/Lower Stableloads
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