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Additional holding tank Hanse 370

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Havsula View Drop Down
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    Posted: 25 December 2021 at 11:36
Hanse 370 model 2008, 3 kabin version:
Has anyone successfully added an additional holding tank ?
If yes pls let me know hos you installer this.
Considering to use the port aft cabin cabinet(half of it) but not sure if this is possible.
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astarte View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote astarte Quote  Post ReplyReply Direct Link To This Post Posted: 25 December 2021 at 13:23
I did that on my H370, 2008. If you use advanced search and search by member name (Astarte) any date you should find how I did it ( posted 15 April 2020). 

Kristoffer
Hanse 370e #412
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Havsula View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Havsula Quote  Post ReplyReply Direct Link To This Post Posted: 25 December 2021 at 14:28
Thank you for this information.
In Your april 2020 post you state that you have blocked the inlet to the original tank?
I didnt quite understand how the routing is from the toilet to blackwatertank-1 and 2.
How to you switch from 1 to 2? Or Are you only using blackwater tank 2?
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Captain Cook Quote  Post ReplyReply Direct Link To This Post Posted: 25 December 2021 at 15:33
In this H400 the existing holding tank is enlarged to hold 85 liters:
Freya H400 #27 (2006), 40HP 3JH4E, 2-cabin, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote astarte Quote  Post ReplyReply Direct Link To This Post Posted: 26 December 2021 at 07:49
Hi Havsula,
The two tanks are linked with a pipe from outlet of tank one to outlet of tank two. This pipe is split with a T-connector to the thru- hull valve. I pump from toilet to inlet of tank two. Since the two tanks are connected they will up in parallel. The inlet of the old tank is therefore not used. 
Kristoffer
Hanse 370e #412
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Havsula Quote  Post ReplyReply Direct Link To This Post Posted: 29 December 2021 at 13:19
Thank you, this makes perfect sense!
Do you have any photos from the installation?
Did you mount the 2nd tank at the exact same height as the original tank?
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astarte View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote astarte Quote  Post ReplyReply Direct Link To This Post Posted: 30 December 2021 at 07:33
Sorry about pictures. Bottom of new tank will be naturally mounted a few cm higher than the old one. You can call me on 91337586 if you need more details. 
Kristoffer
Hanse 370e #412
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Passatempo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Passatempo Quote  Post ReplyReply Direct Link To This Post Posted: 11 July 2022 at 12:20
Is there in the existing holding tank a non-return valve on the inlet?
Tom
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Post Options Post Options   Thanks (0) Thanks(0)   Quote astarte Quote  Post ReplyReply Direct Link To This Post Posted: 11 July 2022 at 18:17
No non-return valve except in the toilet pump itself. However the inlet pipe inside the tank goes to near the top of the tank. 
Kristoffer
Hanse 370e #412
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Passatempo Quote  Post ReplyReply Direct Link To This Post Posted: 11 July 2022 at 18:43
Thanks. Makes sense, now I know what to do.

Tom
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