Grey Water Transfer System - Dutchmen Owners

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Old 05-10-2017, 01:31 AM   #1
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Grey Water Transfer System

Hi. We have a 2015 V3605. We ran into the problem of the Main grey tank filling up too fast. The kitchen sink, the shower and bath sink are all plumbed to this tank. With little to no use on grey #2. So below is description and pictures of solution.

First there is NO cross-connect between this system and fresh water. The blue line is the suction side of main grey tank. This is input to its own pump. The pump outputs to 3 solenoid manifold. The solenoids then can be individually selected to transfer the grey water; Grey #2, Black 1, or Black 2. The red switch is for pump, the blues are for discharge solenoid.

These are 12vdc devices. Pex and ABS on plumbing side. The suction line is braided poly 3/8" with brass barb (to keep it on bottom of tank). This was "fished" down the ABS cap before final gluing.

Usage prior to this was main grey filled up, other tanks at 1/3 or less. 4 day weekend having to go dump one tank with all that empty space in other tanks was annoying to say the least.
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Old 05-10-2017, 01:36 AM   #2
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Black Tank 1 connection
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Old 05-10-2017, 01:38 AM   #3
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Solenoids and Black Tank 2 connection
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Old 05-10-2017, 01:39 AM   #4
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Grey Tank 2 connection.
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Old 05-10-2017, 10:11 AM   #5
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Impressive. Very nice.
Rusty
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Old 05-10-2017, 10:42 AM   #6
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Interesting...

I have the same problem with my current rig, one gray tank is for the kitchen sink and the shower the other for the bathroom hand sink. I was thinking about just putting an equalizer pipe between the two tanks and let them figure it out for themselves.

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Old 05-10-2017, 08:09 PM   #7
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Grey Water Transfer System

Quote:
Originally Posted by wahoonc View Post
Interesting...



I have the same problem with my current rig, one gray tank is for the kitchen sink and the shower the other for the bathroom hand sink. I was thinking about just putting an equalizer pipe between the two tanks and let them figure it out for themselves.



Aaron


I'm with you... let it over flow .. similar to a septic tank to drain field set up.. that is a SUPER IMPRESSIVE set up though.


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Old 05-10-2017, 11:37 PM   #8
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Thank you. The pex fittings are threaded into the ABS cap.

The problem with an equalizer pipe is fresh water tanks sit between waste tanks. I looked into that.

Front (Birdseye view)

GT1 BT1
Fresh 1
Fresh 2
GT2 BT2
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Old 05-10-2017, 11:55 PM   #9
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Flex pipe?

I have a motor home and the fresh water is above the floor. I think my grey tanks are on opposite sides so a connector pipe may just work. Just have to figure out the logistics of it.

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Old 06-30-2017, 02:34 AM   #10
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This is impressive work. I ran into the same issue. I added a Valterra twist on waste valve. I keep it closed and open both grey tank valves. It equalizes the tanks.


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