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Old 09-17-2019, 07:29 AM   #1
Audionut
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How many Grey tanks do I have?

Inside my 2015 KEYSTONE COUGAR 30RLI it indicates on the control panel greywater 1 and grey water 2.

However on the outside I can only see one valve to pull to empty for gray water. And when you check the levels inside on the control panel both grey water 1 and 2 show different levels when you check to see how full they are.

I am wondering if there actually are two grey tanks, but are somehow hooked together with one as an overflow maybe?
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Old 09-17-2019, 07:35 AM   #2
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I think one. Could be the panel has the capability for monitoring 2.
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Old 09-17-2019, 07:37 AM   #3
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Brochure shows 60 gals for grey water, so that would be 2 tanks. I'd look under the kitchen slide for a second valve. My trailer has the second valve just rearward of my slide (but a different floorplan). You may have to crawl underneath as any stickers might be gone.
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Old 09-17-2019, 07:44 AM   #4
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Yep, 2 gray tanks. Check up in the wheel well for the other handle. That's where mine is for the galley gray tank.
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Old 09-17-2019, 07:55 AM   #5
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Just FYI, don't be too concerned with the sensor indicators inside they're notoriously useless.
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Old 09-17-2019, 09:11 AM   #6
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Just FYI, don't be too concerned with the sensor indicators inside they're notoriously useless.
Also like I said, I still cannot find the second outside grey water valve.

But the readouts inside the camper initially said empty and now since we are now camping the grey water 1 says 1/3 full, and Grey water 2 says 2/3 full.
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Old 09-17-2019, 08:49 AM   #7
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Thanks all, but I looked in all the locations you mentioned and for the life of me I cannot find the second valve for the grey water.
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Old 09-17-2019, 09:33 AM   #8
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I believe you have both a galley and bathroom grey waste tanks. Our dump valve for the galley tank is just behind the wheels on the driver side. Look for a small "T" handle. You might need a flashlight and need to retract the slide. Probably not marked since the stickers have a habit of coming off. The grey tank dump handle located by the black dump handle is used for the bathroom tank.
Not everyone has had the good luck we've had with the tank sensors. Ours work fine. Looks like yours are working as well.
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Old 09-17-2019, 10:12 AM   #9
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I believe you have both a galley and bathroom grey waste tanks. Our dump valve for the galley tank is just behind the wheels on the driver side. Look for a small "T" handle. You might need a flashlight and need to retract the slide. Probably not marked since the stickers have a habit of coming off. The grey tank dump handle located by the black dump handle is used for the bathroom tank.
Not everyone has had the good luck we've had with the tank sensors. Ours work fine. Looks like yours are working as well.

I am attaching a picture that I took from the rear towards the front and way back in the distance you can see the first gray tank valve that's probably for the bathroom. But I still cant see another valve anywhere there.
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Old 09-27-2019, 01:13 PM   #10
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Grey tanks

I have 2 grey tanks. One is ion the side but the other is underneath the rv about center below where the sink is located
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Old 09-17-2019, 09:40 AM   #11
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They put the label for the dump valve handle located behind a rear tire on the inside of the tire rim. Crawling under the slide and reaching behind the driver rear tire which is normally positioned near or over a fire ant mound and over gravel is one of the greatest joys of my life.
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Old 09-18-2019, 03:12 AM   #12
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They put the label for the dump valve handle located behind a rear tire on the inside of the tire rim. Crawling under the slide and reaching behind the driver rear tire which is normally positioned near or over a fire ant mound and over gravel is one of the greatest joys of my life.
Ya gotta love a member who actually has a sense of humor...AND is a dog lover!
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Old 09-17-2019, 10:21 AM   #13
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Sorry, I'm having difficulties attaching a picture. the internet service where we're camping is terrible.
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Old 09-17-2019, 01:04 PM   #14
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Sorry, I'm having difficulties attaching a picture. the internet service where we're camping is terrible.
When you get to the dump station drain the black tank first. Then the grey. If both grey level indicators change to empty then you've found your answer. Personally, I've not seen this set up before so it'll be news to me. On the other hand, if one sensor still shows water in the tank you'll need to do a little more looking. The enclosed underbelly makes it a little more difficult but not impossible. We had the T handle and rod loosen and fall out on our Cougar. I got lucky since I knew where it was originally and was able to thread another rod on. This time with a little "Loctite"
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Old 09-17-2019, 10:48 AM   #15
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This is new to me but I saw a different post about a similar model where Keystone claimed there was one handle to empty 2 tanks.
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Old 09-17-2019, 12:25 PM   #16
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This is new to me but I saw a different post about a similar model where Keystone claimed there was one handle to empty 2 tanks.

@JSB5717 Thanks! Hopefully that is the way our camper is set up! We are packing up to go home and will be at the dump station soon so we will find out then. This is the first time out with this camper, we bought used, so it'll be good to know!
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Old 09-17-2019, 01:28 PM   #17
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This is new to me but I saw a different post about a similar model where Keystone claimed there was one handle to empty 2 tanks.
If plumbed this way both tanks should be equalized reading same levels. I'd bet a donut & cup o Joe that you have 2 grey tanks one missing the valve handle or well hidden.
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Old 09-17-2019, 01:38 PM   #18
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It has been known to happen that Keystone covered a handle with that black plastic Darko and sealed things up.
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Old 09-17-2019, 01:40 PM   #19
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It has been known to happen that Keystone covered a handle with that black plastic Darko and sealed things up.
It's possible but this is a used rig. Surely the tanks have had to be emptied before. There's got to be a simple answer.
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Old 09-17-2019, 01:38 PM   #20
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It's a first for me too. Reading the same levels assumes the guages are working correctly. I guess we'll find out when they dump.
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