User Tag List

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 3 of 3
  1. #1
    Setting Up Camp
    Join Date
    Mar 2021
    Posts
    22
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    376TH Grey Tanks? Which fixtures are connected to what?

    Hi All,

    Brand new RV'er thrust into the throws of full timing straight out of the gate in a 2019 376TH. My wife and I are 3 days in to full timing, and my questions abound. My current question is this: Since our tank sensors aren't working well (and haven't since near new according to previous owner), is my grey tank full? The indicator says 100% full, but I'm pretty sure its said that since we got it. The shower and bathroom sink are draining slowly (that is new as of today), and kitchen sink is draining as normal. HOWEVER, this unit has 2 grey tanks, with two separate grey dump valves. We have a washer and drier that we have not used yet, but we have been using the kitchen sink, though not to the extent of shower/bathroom sink.

    So, which fixtures drain to which tank? Is it Shower & bathroom sink in 1 and then kitchen sink and washer in 2? Or is it shower/BR sink/Kitchen sink in 1 and washer alone in 2? Are the tanks connected? If so, shouldn't the bathroom fixtures drain easily, even when tank 1 fills and overflows into tank 2? Or maybe do they connect with a narrower pipe which allows the fixtures connected to tank 1 to fill, albeit slowly?

    Basically, what drains to what, and are they connected?

  2. #2
    Site Sponsor
    Join Date
    May 2020
    Location
    Right now, New Mexico
    Posts
    546
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Diesel_And_Desflurane View Post
    Hi All,

    Brand new RV'er thrust into the throws of full timing straight out of the gate in a 2019 376TH. My wife and I are 3 days in to full timing, and my questions abound. My current question is this: Since our tank sensors aren't working well (and haven't since near new according to previous owner), is my grey tank full? The indicator says 100% full, but I'm pretty sure its said that since we got it. The shower and bathroom sink are draining slowly (that is new as of today), and kitchen sink is draining as normal. HOWEVER, this unit has 2 grey tanks, with two separate grey dump valves. We have a washer and drier that we have not used yet, but we have been using the kitchen sink, though not to the extent of shower/bathroom sink.

    So, which fixtures drain to which tank? Is it Shower & bathroom sink in 1 and then kitchen sink and washer in 2? Or is it shower/BR sink/Kitchen sink in 1 and washer alone in 2? Are the tanks connected? If so, shouldn't the bathroom fixtures drain easily, even when tank 1 fills and overflows into tank 2? Or maybe do they connect with a narrower pipe which allows the fixtures connected to tank 1 to fill, albeit slowly?

    Basically, what drains to what, and are they connected?
    I think the 376 is a front bedroom unit. If so, the washer, shower, and bathroom sink all go into the one up front, the second gray tank is for your galley (kitchen). If you and yours have showered all three days, you will want to dump it.

    Sent from my phone using Tapatalk
    Mark & Mary. Currently hailing from New Mexico. Hopefully full timing in late 2022.
    Current camper: Purchased a 2021 DG Reflection 320MKS!
    Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel

  3. #3
    Site Sponsor orbiker's Avatar
    Join Date
    Oct 2015
    Location
    Springfield, Oregon
    Posts
    2,076
    Mentioned
    11 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Diesel_And_Desflurane View Post
    Hi All,

    Brand new RV'er thrust into the throws of full timing straight out of the gate in a 2019 376TH. My wife and I are 3 days in to full timing, and my questions abound. My current question is this: Since our tank sensors aren't working well (and haven't since near new according to previous owner), is my grey tank full? The indicator says 100% full, but I'm pretty sure its said that since we got it. The shower and bathroom sink are draining slowly (that is new as of today), and kitchen sink is draining as normal. HOWEVER, this unit has 2 grey tanks, with two separate grey dump valves. We have a washer and drier that we have not used yet, but we have been using the kitchen sink, though not to the extent of shower/bathroom sink.

    So, which fixtures drain to which tank? Is it Shower & bathroom sink in 1 and then kitchen sink and washer in 2? Or is it shower/BR sink/Kitchen sink in 1 and washer alone in 2? Are the tanks connected? If so, shouldn't the bathroom fixtures drain easily, even when tank 1 fills and overflows into tank 2? Or maybe do they connect with a narrower pipe which allows the fixtures connected to tank 1 to fill, albeit slowly?

    Basically, what drains to what, and are they connected?
    We have a 2018 374TH-R Solitude. It is the beautiful sister of the 376 Momentum.
    The bathroom sink and shower go into one tank.
    The kitchen sink drains into the the other tank. I'm guessing the washer drains into that one too, but not sure (we didn't want a W/D).

    Which handle does which one is a different question. It's a 50 / 50 chance which one does which one.

    I drain the grey tanks every 3 or 4 days, but I put a Valterra Twist-on Valve on the outside dump end. With the valve closed, I can open the 2 grey valve. The grey water will equalize in the pipes behind the blocked exit where I put the twist on valve.

    Here is a tip for cleaning the tanks. The Geo Method

    Happy camping. We have 9 months till we go full time. KEN
    Backpacker and tent camper all my life, including BSA as a kid and adult. Motorcycle trips with a tent too 1978 to Present.
    2-10-05 - 2002 F350 CC SWD PSD and a new 2003 Citation 10'8S mostly for Crater Lake Ski Patrol.
    2016 Grand Design 380TH as of 10-29-2015. It's HUGE. Update: Traded Momentum for a New 2018 374TH-R Solitude as of 3-16-19
    10-19-18 - traded truck for a 2016 Ram 3500 DRW Laramie Crew Cab 4 X 4 Long Box.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

DISCLAIMER:This website is not affiliated with or endorsed by Grand Design RV, LLC or any of its affiliates. This is an independent site.