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Head / toilet hose blocked

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PRCH View Drop Down
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    Posted: 30 July 2019 at 12:23
Hi,
The hose connecting the head/toilet to the black water tank is blocked.Dead
Has any of You changed the hose? If Yes - how did You manage?

Thanks
Regards

Peter

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S/Y Schisslaweng, Hanse 312, #212
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iemand View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iemand Quote  Post ReplyReply Direct Link To This Post Posted: 30 July 2019 at 17:33
Two ideas: check if the thruhull is free from the outside. Mine was completely blocked because of barnacles. Seems to be an issue on plastic.
If that is free try with water pressure from outside.
Let the marina empty it from deck and than open the seavalve later on as well to flush your tank.

This should solve your problems!

BR Thomas 

Hanse 312 MJ 2004 - Hanse 370e MJ 2007
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PRCH Quote  Post ReplyReply Direct Link To This Post Posted: 30 July 2019 at 17:46
Hi,
Thank You for Your reply.
Unfortunately to problem is the hose between the head and the tankCry Blocked by crystals created over time.
And it looks like quite a complicated job to change the hose....!?


Edited by PRCH - 30 July 2019 at 17:46
Regards

Peter

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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 30 July 2019 at 18:41
Yes, Changed mine 2 years ago & it is no joke.
I disconnected the heads pump etc & moved that out of the area.
The pipe goes under the sink & upwards. Mine was fastened in place with cable ties & was very hard so could not just be pulled out.
First (I put old clothes on and sat in the shower tray)I opened the sink cupboard & put my arm up underneath & with a pair of cable cutters, I cut as many cable ties as possible, taking care not to cut any wires.
I then used a junior hacksaw & cut through the hose in short lengths varying from 6 inches to 3 feet. I started near the heads where it enters the sink cupboard then worked my way aft. I had already disconnected the blackwater tank so I cut the hose in sections there which enabled me to pull bits of it back into the sink area & cut it up.
I saved all the bits & joined them up afterwards to work out the length & purchased a length of sanitary hose which had no wire coils in it. I bought a bit about 2 ft longer. This enabled me to adjust the length as necessary.
I put it back without so many cable ties, but I did make sure that I maintained the tall loop in the sink area, behind the heads,
I did not use the same for the length from tank to sea cock outlet. I used a very slightly oversized clear braided hose for that. The reason is that it is flexible & can be removed easily in the event of a blockage. Also I can see where the blockage is- ie if the blockage is at the sea cock.
This hose kinks slightly where it goes through the locker floor so to keep it round I got some 6mm bolts & some short lengths of aluminium. I made clamps to go round the pipe ( I made 3 ) & by clamping the pipe I can force it round to maintain best flow. Also in the event of blockage at the seacock I can clamp the pipe , Remove the pipe from the sea cock without emptying the blackwater tank into the bilges. I can also "work" the pipe to get any blockage in that part moving- It is where most blockages occur-  which helps avoid disconnecting the pipe.
Because i rarely have to use the blackwater tank I have the air valve at the deck covered with tape. This means that any effluent is forced out of the tank fairly quickly and out to the sea. It stops smells when one is sailing affecting the crew.


Edited by samuel - 30 July 2019 at 18:45
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PRCH Quote  Post ReplyReply Direct Link To This Post Posted: 01 August 2019 at 07:06
Hi Samuel,

Thank You very much for reply.

One question - from which point did You feed/install the new hose?
Regards

Peter

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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 01 August 2019 at 07:40
Peter
From memory-- there are 2 ways to do it. It can be pushed in through the hole from the tank end which is easy as it means one does not have to line up the hole.
the other way is through from the sink end but you have to get the pipe out of the hole under the tank. To do this poke a stick or batten through the hole & put the pipe over the stick which will help it line up with the hole.
The important thing is to purchase a flexible pipe because you have to get the loop formed and get the pipe around and onto the heads pump as well as on to the holding tank.

I really forget which way I ended up using, but I know I did it on my own, which is handy because one can use lots of  bad language (always helpful) & no one can hearThumbs Up

Remember to make sure that the elbow to the holding tank is clear of calcium. Having changed the pipe it is easy to forget that short length. I found that there was quite a lot in that bend. I broke it up with a screwdriver.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redlion Quote  Post ReplyReply Direct Link To This Post Posted: 02 August 2019 at 14:49
Like Samuel I had a real problem trying to extract the old pipe as it is cable tied on with some kind of heavy duty glue. In the end I gave up and re-routed the pipe inside the heads around the back of the toilet with the loop in the waterproofs drying corner and cut a new hole through to the sea cock in the bilges. We now pump at least 12 pumps after each piss to prevent another build up of calcium. I own a pub and have the same problem in the urinals and I pour down hydrochloric acid in the form of brick and patio cleaner down them every few months which seems to work well, I am told farm supply shops sell a product used to keep dairy drains clear works really well too.
It,s not over till the fat lady drowns
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 02 August 2019 at 15:48
Originally posted by redlion redlion wrote:

I own a pub and have the same problem in the urinals ................, I am told farm supply shops sell a product used to keep dairy drains clear works really well too.


They do drink some dodgy strong stuff up in those highlandsShocked
I think it is all that rolling in the heather & the glens that does it.Wink


Edited by samuel - 02 August 2019 at 15:49
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PRCH Quote  Post ReplyReply Direct Link To This Post Posted: 03 August 2019 at 08:03
Dear Gentlemen,

Thank You very much for Your replies.

I have started to work out a long list of 澱ad words to say during the workDead

I will keep You updated once I am able to go for a 菟iss again👍🏼


Regards

Peter

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gregor Quote  Post ReplyReply Direct Link To This Post Posted: 08 August 2019 at 09:21
I've had similair problems with my Hanse 311, the hose was blocked with cristals. After replacing, I every now and than put some 'steradent' tablets in the toilet, flush some time to circulate the mixture and close the valves and have it last for 12h or so. You can also use cheap cleaning vinegar. This will 'solve' the cristals and keep the hose more or less clean. One other thing, when flushing the toilet, use enough water, I pump for around 15times before flusing it away.
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