Troubleshooting slow water flow in toilet sink

[G-RMPS]

Puzzle:

Water flow from the tap in the toilet sink is slower than previously. All other taps are fine. There’s no air in the system that I’m aware of. No spluttering etc.

I’ve cleaned the filter where the water exits the tap. No issue there.

I’ve checked the visible part of the pipework to the tap. Nothing obvious.

The fresh water tank was cleaned before we set off, but there’s never been any problem there.

No obvious leak anywhere.

Clues?

 

[Two on Tour]

Puzzle:

Water flow from the tap in the toilet sink is slower than previously. All other taps are fine. There’s no air in the system that I’m aware of. No spluttering etc.

I’ve cleaned the filter where the water exits the tap. No issue there.

I’ve checked the visible part of the pipework to the tap. Nothing obvious.

The fresh water tank was cleaned before we set off, but there’s never been any problem there.

No obvious leak anywhere.

Clues?

Is the same slow rate of flow on both the hot and cold ?

 

[Speve]

Check the submersible pump has not slipped off the pipe inside the tank it will still work but on a reduced flow until you push it back on properly and tighten the clip

 

[BouncyBoatFolk]

What van is it? Is it a submersible pump?
Has any other work been undertaken in the van could have lead to the feed pipe getting crushed?
Mike.

 

[scotjimland]

sounds like it's a submersible pump on it's way out ..

the Riech 19lt tandem twin pump has two motors.. one fails the pump output goes down to 50%

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[BouncyBoatFolk]

sounds like it's a submersible pump on it's way out ..

the Riech 19lt tandem twin pump has two motors.. one fails the pump output goes down to 50%

The OP would have to let us know the van layout. If the duff tap is furthest from the pump, that pump may well be at fault, but if closest Does the shower share the same room, and if so how's the pressure on that?
Mike.

 

[scotjimland]

The OP would have to let us know the van layout. If the duff tap is furthest from the pump, that pump may well be at fault, but if closest Does the shower share the same room, and if so how's the pressure on that?
Mike.

I made a suggestion based on the information provided.. and my knowledge of Hymer A class vans..

The Hymer A class uses a the Reich Tandem twin barrel pump with are renowned for partial failure.... ie working at 50% flow

I've changed several that had that symptom on my Hymer vans, .. so I do have some insight and experience of them .. if you had looked at the OP info you would have known this..no guess work involved

but are you saying I shouldn't have made it... ?

 

[BouncyBoatFolk]

I made a suggestion based on the information provided.. and my knowledge of Hymer A class vans..

The Hymer A class uses a the Reich Tandem twin barrel pump with are renowned for partial failure.... ie working at 50% flow

I've changed several that had that symptom on my Hymer vans, .. so I do have some insight and experience of them .. if you had looked at the OP info you would have known this..no guess work involved

but are you saying I shouldn't have made it... ?

Not at all, and the response is somewhat techy as my response was not critical, just an observation based on the limited OPS information and not seeing Hymer as the van in question. But, whatever, have jolly hogmanay
Mike.

 

[scotjimland]

my response was not critical,

sorry, that's what it sounded like to me..

have jolly hogmanay
Mike.

same to you Mike.. cheers

 

[BouncyBoatFolk]

sorry, that's what it sounded like to me..


same to you Mike.. cheers

Thanks, that is sometimes the problem with a written response as opposed to a spoken one, the intonation is missing. I was genuinely trying to add to the discussion not belittle your considerable knowledge, but no harm done. Hopefully more info will be forthcoming from the O.P.
Regards. Mike.

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[AlunandFelicie]

Not at all, and the response is somewhat techy as my response was not critical, just an observation based on the limited OPS information and not seeing Hymer as the van in question. But, whatever, have jolly hogmanay
Mike.

sorry, that's what it sounded like to me..


same to you Mike.. cheers

I love it when friends kiss and make up
Merry Santa time

 

[Manic]

Does the flow increase if you open another tap at the same time, could be broken micro switch wire.

 

[G-RMPS]

Yes, Hymer A Class, and yes Reich tandem pump. There’s just one pipe outlet from the pump. That must split into three somewhere downstream and out of sight.

The sink in question is probably closer to the pump than other locations. There’s been no work done which might impact pipework but I suppose a clip might have come loose somewhere hidden (in which case there might be unwanted water somewhere.

I do have a spare pump which I will try if the problem becomes more acute.

Thanks all for thoughts to date.

 

[G-RMPS]

And to answer other questions:

Flow is same for hot tap and cold tap.

Flow doesn’t increase if a different tap is switched on.

 

[Sue and Rick]

Blockage / restriction in the tap

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[G-RMPS]

Thanks, that was my first thought, but it’s just clean water. Unless something has disintegrated in the tap…

 

[BouncyBoatFolk]

There's a gauze /screen in tap cartridge. The cartridge has to be removed to see it, which is a PIA job . If you don't have one already, a spare pump is useful investment which could be used to test whether the existing one is partly goosed.
Mike.

 

[AlunandFelicie]

There's a gauze /screen in tap cartridge. The cartridge has to be removed to see it, which is a PIA job . If you don't have one already, a spare pump is useful investment which could be used to test whether the existing one is partly goosed.
Mike.

I had a similar problem first changed the pump which improved flow to all taps but still somewhat restricted In bathroom ,so after watching videos re micro switch/filters I thought sod it and change the whole tap cost me £100 odd but only took an hour and was fairly easy rather than messing around for hours trial and error trying to fix it.

 

[allanr]

Puzzle:

Water flow from the tap in the toilet sink is slower than previously. All other taps are fine. There’s no air in the system that I’m aware of. No spluttering etc.

I’ve cleaned the filter where the water exits the tap. No issue there.

I’ve checked the visible part of the pipework to the tap. Nothing obvious.

The fresh water tank was cleaned before we set off, but there’s never been any problem there.

No obvious leak anywhere.

Clues?

Do you have an in line water filter I had a problem with the kitchen tap in mine found the filter had burst and filled the pipes after it with what looked like carbon sand. Had to remove filter bypass it and blow out the system with mains water. If it’s not an air lock the pipes have to be partially blocked or flattened.

 

[G-RMPS]

Time to close this thread.

Very embarrassing. I opened the tap today expecting the usual dribble. The filter blew off the end of the tap and water just gushed out. The backside of the filter was virtually completely blocked with limescale (I assume). Whatever, it’s fixed now and my spare pump will stay as a spare for the time being.

Thanks to all contributors for informative responses!

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