Grey Water In Shower! (1 Viewer)

Sep 10, 2017
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We had an awful smell in our van today, after blaming the dog and then the kids we thought we had better find out what it was!
The grey tank was showing 75% full, meaning somewhere between 75% and full. We had driven down a very steep hill and the grey water had come up through the shower plugs. Luckily the water had stayed in the tray.
That will teach us to let it get nearly full. Where we had been staying didn’t have a drive over drain and we knew the next place did so thought we would wait until then, we won’t be doing that again.
 

eddie

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Oct 4, 2007
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If you
We had an awful smell in our van today, after blaming the dog and then the kids we thought we had better find out what it was!
The grey tank was showing 75% full, meaning somewhere between 75% and full. We had driven down a very steep hill and the grey water had come up through the shower plugs. Luckily the water had stayed in the tray.
That will teach us to let it get nearly full. Where we had been staying didn’t have a drive over drain and we knew the next place did so thought we would wait until then, we won’t be doing that again.
Top Tip:- If you open the valve before you drive off, that doesn’t happen(y)

Also helps keep the roads clean
 
Last edited:
OP
OP
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Sep 10, 2017
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If you
Top Tip:- If you
open the valve before you drive off, that doesn’t happen(y)

Also helps keep the roads clean

I’ve heard that cyclist and motorbikes really appreciate it as well as it helps keep them clean. I should have done that rather than emptying it in a lay-by to help water the hedges

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Jan 24, 2015
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Well as a biker I am going to bite at this thread
Seeing motorhomes with the valves open spewing out grey waste as they drive along the highways and byways really makes my blood boil. Whilst I realise the above comments where made tongue in cheek (I hope) this practise should come with a fine it is extremely dangerous to motorbikes and cycles.
 

Nasher

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As a biker for over 50 years, I have never seen a motorhome dribbling grey waste when I've been riding. I'm not saying it doesn't happen, I just think it's a rare occurrence.

Anyway, I'm normally going so fast, it's all just a blur:)

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eddie

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Well, as you say it is tongue in cheek, but then again as some very experienced riders say that a bit of grey water isn't exactly the most hazardous! thing that they will encounter during a ride.

But I expect that some motorcyclists don't like riding when it is raining or the roads are wet?

Who knows?
 

Blue Knight

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We had driven down a very steep hill and the grey water had come up through the shower plugs. Luckily the water had stayed in the tray.

Would it be possible to stick a bath plug or rubber bung in the shower tray.
 

Minxy

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Our Globecar shower tray has plugs ... not really sure why!

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Feb 22, 2008
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Best use tote tank and empty in designated area before you leave , a bit of exercise does you good, I think ;)
 
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I guess if you had an overzealous environmental officer in a car behind you he could report you for "fly tipping", ie dumping waste without a permit or within the public realm??

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OP
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Sep 10, 2017
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As some seem to take Eddie’s suggestion and my response seriously I will clarify that I have never dumped grey water on the road or in a hedge.
When I stayed at Cornish Farm I just left the grey water open so that it could drain on the pitch, much easier and safer for all. ;)
 
Aug 18, 2014
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I guess if you had an overzealous environmental officer in a car behind you he could report you for "fly tipping", ie dumping waste without a permit or within the public realm??
There was a bloke years ago who had a 'james bond' thing attached to the rear of the car for dumping fluid behind & if I recall correctly he was stopped by the police & I'm sure the fine was 1k. Got to be 20 + years ago.

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eddie

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On American vans we have what is called "Highway Dispersal"

When we drive our RV's, the on board macerator grinds a 50\50 mix of the contents of the black and grey tanks, then sprays it into a nozzle on each of the exhaust manifolds of the V10 engine.

As the manifold is red hot it vapourises the "Poo" mix coming out of the exhaust as steam

So motorcyclists riding behind a RV remember, whilst your peering at the road to see if you can have a self righteous rant at the driver for a dribble shower water over the road (some say harmlessly) your being covered in micro droplets of their Poo!

@Jim, in his RV has taken his a stage further and can "aim" his discharge!

Now Thor have bailed Hymer out, I expect to see these types of improvements on Hymers bringing them into the 21st Century with environmental disposal methods such as this
 

SuperMike

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I prefer to just leave the black valve open, 'cos it does not contain soap and grease and so its not dangerous to bikes etc. :gum:
 
Last edited:
Aug 6, 2013
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Well as a biker I am going to bite at this thread
Seeing motorhomes with the valves open spewing out grey waste as they drive along the highways and byways really makes my blood boil. Whilst I realise the above comments where made tongue in cheek (I hope) this practise should come with a fine it is extremely dangerous to motorbikes and cycles.
As a very long-standing biker, now ex-biker, I'll bite too. Grey waste doesn't even make the bottom of the quite long list of hazards faced by motorcyclists. What on earth do you think it will do to you?
 

p-c

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Sep 13, 2013
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Hi
So back to the actual problem.
We had grey water coming up into the shower tray. I solved the problem by putting a one way/non return valve in the waste pipe from the shower and this solved the problem completely.
If I remember correctly the part was readily available at the local caravan shop and the fitting was not too difficult although it did mean crawling under the MH and avoiding some wet when disconnecting pipes.
Regards
p-c

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ABZSteve

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We had an awful smell in our van today, after blaming the dog and then the kids we thought we had better find out what it was!
The grey tank was showing 75% full, meaning somewhere between 75% and full. We had driven down a very steep hill and the grey water had come up through the shower plugs. Luckily the water had stayed in the tray.
That will teach us to let it get nearly full. Where we had been staying didn’t have a drive over drain and we knew the next place did so thought we would wait until then, we won’t be doing that again.
Nope, don't wait, dump it wherever you are :pop:
 

pappajohn

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Aug 26, 2007
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Well as a biker I am going to bite at this thread
Seeing motorhomes with the valves open spewing out grey waste as they drive along the highways and byways really makes my blood boil. Whilst I realise the above comments where made tongue in cheek (I hope) this practise should come with a fine it is extremely dangerous to motorbikes and cycles.
And you never ride in the rain of course!

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JJ

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May 1, 2008
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I am a tad miffed...

I was about to post that I didn't believe that grey water on the road was much of a hazard to motor cyclists given all the other dangers facing them them expecting ire (and thus further 'discussion') from the 'brumm brumm boys' and what happens?

Several other folk think the same!

Pah!

Where's the Fun in that? :whistle:



JJ :cool:
 
Last edited:

captainscarlett

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On American vans we have what is called "Highway Dispersal"
I had a 1974 GMC classic motorhome that was fitted with an exhaust burner for that purpose, i never did use it as it would cover anything following behind with a whitish grey dust, could be quite amusing though, unless of course its you that is following.
When we drive our RV's, the on board macerator grinds a 50\50 mix of the contents of the black and grey tanks, then sprays it into a nozzle on each of the exhaust manifolds of the V10 engine.

As the manifold is red hot it vapourises the "Poo" mix coming out of the exhaust as steam

So motorcyclists riding behind a RV remember, whilst your peering at the road to see if you can have a self righteous rant at the driver for a dribble shower water over the road (some say harmlessly) your being covered in micro droplets of their Poo!

@Jim, in his RV has taken his a stage further and can "aim" his discharge!

Now Thor have bailed Hymer out, I expect to see these types of improvements on Hymers bringing them into the 21st Century with environmental disposal methods such as this
 
Oct 8, 2014
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I'm a newbie and always will be. You never know it all.
Well as a biker I am going to bite at this thread
Seeing motorhomes with the valves open spewing out grey waste as they drive along the highways and byways really makes my blood boil. Whilst I realise the above comments where made tongue in cheek (I hope) this practise should come with a fine it is extremely dangerous to motorbikes and cycles.


Is that your Trike in the avatar:whistle:
 

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