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Thread: managing the dual grey tanks
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02-18-2018, 09:25 AM #11
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02-18-2018, 11:16 AM #12
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02-18-2018, 03:54 PM #13
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^^^^^That's been our experience also. Lots more hot water than the 12 gallon unit we had on our boat. Give it a try before making spendy changes. The original setup may work for you too.
Jim & Georgianne
N. California
2016 Reflection 29RS
2008 Ford F-250 Super Duty PSD
B&W Companion hitch
Rubber turtle with no name
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03-22-2023, 04:38 AM #14
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Hi Bubblehead, sorry to just now just on this blog. I recently bought a 2016 328M. The online documentation says I have one grey tank. There is one pull valve on the Nautilus system in the pass through. However, on the level readout in the RV the second grey tank was reading full (4 lights). Also, the kitchen sink would barely drain. I am guessing there is a second pull valve somewhere but I haven't found it. Do you have a picture of the location of your second pull valve?
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03-22-2023, 04:44 AM #15
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Mine has 3 grey tanks, bathroom, kitchen and laundry.
I would xconnect them if I needed, but I just empty 1 at a time.
I have installed the extra gate valve on the end of my pipe connection and use it for isolation in case of a tank valve failure.Retired U.S. Navy Engineer
2020 Ram 2500 Big Horn, CC, 6.7 Cummins
2022 Grand Design Reflection 315RLTS
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03-22-2023, 04:57 AM #16
My 381M has 2 grey tanks with a single pull for them both. The main Grey is for the kitchen and master bath. The 2nd Grey is ONLY for the washing machine drain in the garage. The 1/2 bath sink and toilet go into the 2nd black tank. I have separate gauges for the grey tanks, but mine "never equalize" and I was told only meet so to speak for discharge... Since I do not have a washer and dryer, the 2nd grey is not really used in my rig.
2023 Momentum 397TH w/Gen3 Goosebox
2020 GMC Sierra Denali Duramax
2020 F-450 Limited PowerStroke
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03-22-2023, 06:58 AM #17
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Hi,
It’s located behind the left (curb side) rear wheel near the aux (second) fresh water tank. Mine did not have a handle on it when purchased, it was just a cable sticking out with a threaded end for a handle. If you don’t have a handle on it, pull with vice grips to empty, then go buy a handle. Good luck.John & April, Silverdale, WA
2018 Grand Design 328M Toy Hauler
2016 FORD F-350 SD, Lariat pkg., Dually, Diesel, 4x4, Crew Cab
2014 Harley Davidson CVO Ultra Limited
2010 Eagle Cap 995 slide in camper w/tow behind trailer
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03-22-2023, 11:05 AM #18
i think you are mistaken.you actually have 2 blacks. the half bath,washer, and probably kitchen sink for one of them. the main bath gets its own black for the toilet.and the shower goes into the only grey. what you describe as two greys with a single pull,but seperate gauges is impossible..2021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
Two bathrooms, no waiting 155 fresh, 104 black, 104 grey 1860 watts solar.
800AH BattleBorn Batteries No campgrounds 100% boondocking
2020 Silverado High Country 3500 dually crewcab Duramax Allison
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