Fresh water tank emptying valve wheel jammed (1 Viewer)

Jul 16, 2017
35
37
Scotland
Funster No
49,492
MH
Carthago I 141
Exp
Had one 15 years ago, Globestar for last 3 years and now an A Class
Like another poster I've struggled to find the right words to describe this. But when I've tried to close the valve after draining the tank by turning the circular wheel that connectrs to the valve/plug athe bottom of the tank it is jammed and won't turn one way or another. I can't find online any description or exploded diagram of how the part works or is fitted/repaired. I don't want to apply more force turning it in case something breaks, so understanding how it all works would help.
The attached photo shows the offending part.

water tank valve plug.jpg
 
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Paul Frost
Jul 16, 2017
35
37
Scotland
Funster No
49,492
MH
Carthago I 141
Exp
Had one 15 years ago, Globestar for last 3 years and now an A Class
I have now discovered the correct name for this:
Reich tank drain with filling level limiter, https://reich-web.com/en/products/pipe-systems/tank-draining
I also found a thread on a German forum that describes the problem, some solutions and several photographs.
Sounds like it's a common issue and a poor design.
Still not sure if I can fix it or need a replacement (about £80). But at least I know what it all looks like if I take it apart.

Reich tank drain 1.jpeg Reich tank drain 2.jpeg Reich tank drain 3.jpeg Reich tank drain 4.JPG Reich tank drain drawing.JPG
 
Sep 29, 2019
3,104
7,181
Funster No
64,846
MH
Hymer Exsis
Exp
20 years
I once expanded the tank by filling with a hose jammed in tight at a site where the pressure was very high. It pulled the valve apart. Thankfully I was able to put it back together.

It hasn’t jammed that way has it?
 
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Paul Frost
Jul 16, 2017
35
37
Scotland
Funster No
49,492
MH
Carthago I 141
Exp
Had one 15 years ago, Globestar for last 3 years and now an A Class
It's jammed open. I'd just tried to close it so I could fill up with water ready to go away in it.
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
54,030
152,371
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
You may find the connecting rod has come out and jamed I've had it happen.
If you take the knob off there is a big starlock washer under it that holds the unit in place. The star washer is a bit of a pig to get but once out you can take mechanism out and check it over and reassemble. Needs a bit of brut force to get the washer back in.

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Oct 9, 2017
432
1,066
Wisbech
Funster No
50,897
MH
2007 Hymer B654
Exp
Since 2005
Mine broke many years ago at the top where the hand wheel attached to the long shaft/spindle. Ever since I have always closed and opened the bottom seal by turning the (square) shaft with a small spanner so as not to exert any stress on the wheel fixing. Being a keen cyclist I found that the square recess on the end of an old style multi spanner was just the right size to fit the shaft - I fitted a short length of cord to the spanner with a loop to fit over my wrist so as not to drop into the tank.
 

stevewagner

LIFE MEMBER
May 14, 2013
1,858
4,162
Pevensey Bay
Funster No
26,004
MH
Carthago Compactline
Exp
Yonks
I found them a nuisance having to lift the carpet to open the trap. I fitted a tap at the end of the waste pipe and then left the tank tap permanently open.
 

Minxy

LIFE MEMBER
Aug 22, 2007
32,725
66,817
E Yorks
Funster No
149
MH
Carthago Compactline
Exp
Since 1996, had Elddis/Swift/Rapido/Rimor/Chausson MHs. Autocruise/Globecar PVCs/Compactline i-138
I found them a nuisance having to lift the carpet to open the trap. I fitted a tap at the end of the waste pipe and then left the tank tap permanently open.
Depends how often you do it, for us it's only at the end of each trip of 10 to 60 days, if you do it frequently, eg you have lots of weekend trips, then I can appreciate how irritating it would be.
 
Oct 30, 2015
73
272
Inverness
Funster No
39,898
MH
Hymer Exsis i504
Exp
On and off for over 35 years
You may find relevant info in this previous post regarding water tank plug.

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May 7, 2016
7,356
11,908
West Sussex
Funster No
42,951
MH
Malibu Van 640 LE K
Exp
Since 2003
I found them a nuisance having to lift the carpet to open the trap. I fitted a tap at the end of the waste pipe and then left the tank tap permanently open.
Defeats the winterisation but ok in summer. The only frost problem I ever had was the freezing of the tap on the end of the exposed drain pipe. On my Compactline the drain tap control can be reached from outside just by opening the floor hatch by the door and leaning in, I think of it as well designed but I don’t bother with carpets.
 

Minxy

LIFE MEMBER
Aug 22, 2007
32,725
66,817
E Yorks
Funster No
149
MH
Carthago Compactline
Exp
Since 1996, had Elddis/Swift/Rapido/Rimor/Chausson MHs. Autocruise/Globecar PVCs/Compactline i-138
Defeats the winterisation but ok in summer. The only frost problem I ever had was the freezing of the tap on the end of the exposed drain pipe. On my Compactline the drain tap control can be reached from outside just by opening the floor hatch by the door and leaning in, I think of it as well designed but I don’t bother with carpets.
We have the grey waste release in the same place and find it a nuisance as we have vinyl flooring over the original and rugs too plus with 3 dogs it's not ideal to have to open the door unnecessarily. Instead we leave the valve open and have a bung in the end of the pipe which can be easily removed and refitted although I may upgrade it to a tap at some point.

As for the fresh water tank valve, you do have to be careful as the bar is easily dislodged from the 'bung' if you turn it too much.
 
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Paul Frost
Jul 16, 2017
35
37
Scotland
Funster No
49,492
MH
Carthago I 141
Exp
Had one 15 years ago, Globestar for last 3 years and now an A Class
It was -3 degrees here this morning so I'm waiting for it to warm up before I try taking it apart.
 
OP
OP
Paul Frost
Jul 16, 2017
35
37
Scotland
Funster No
49,492
MH
Carthago I 141
Exp
Had one 15 years ago, Globestar for last 3 years and now an A Class
The good news is that nothing was broken.
I took it all apart and when I put it back together it all worked fine.
My conclusion is that I had undone it too far, and the thread of the bung had come out of the thread in the tank. The tight fitting of the rod that goes from the turning wheel down to the bung meant that the thread of the bung couldn't start to engage with the thread of the tank. If I had applied a bit more force I might have managed to re-engage the thread, but I could also have damaged the thread.
I applied a bit of vaseline to the threads just in case that helps. I have also added some markings on the wheel and around it, so now I can more accuratly see how far I've turned it. This should prevent me from undoing it too far again.

I didn't try and remove the big starlock washer after removing the wheel, I unscrewed the mounting plate that clamps it to the top of the tank by holding the inside nut with my fingers and using a large set of plumbing pliers on the top.

Lock ring top of tank.jpeg lock ring.jpg
 

pj650

LIFE MEMBER
Apr 14, 2010
233
695
Gretna. Dumfriesshire.
Funster No
11,061
MH
Bürstner t740
Exp
Motorhoming since 2002
Nice one Paul. I have exactly the same problem.
Will sort it tomorrow. Thanks.

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Feb 27, 2022
13
0
Canterbury, Kent, UK
Funster No
87,149
MH
Burstner Ixeo
Exp
Since 2022
The good news is that nothing was broken.
I took it all apart and when I put it back together it all worked fine.
My conclusion is that I had undone it too far, and the thread of the bung had come out of the thread in the tank. The tight fitting of the rod that goes from the turning wheel down to the bung meant that the thread of the bung couldn't start to engage with the thread of the tank. If I had applied a bit more force I might have managed to re-engage the thread, but I could also have damaged the thread.
I applied a bit of vaseline to the threads just in case that helps. I have also added some markings on the wheel and around it, so now I can more accuratly see how far I've turned it. This should prevent me from undoing it too far again.

I didn't try and remove the big starlock washer after removing the wheel, I unscrewed the mounting plate that clamps it to the top of the tank by holding the inside nut with my fingers and using a large set of plumbing pliers on the top.

View attachment 720189 View attachment 720190
Very Helpful to see how it works.
My problem is that the water drains as a dribble - Do you think its the same problem?
 

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