Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?


--
Dave - The Medway Handyman www.medwayhandyman.co.uk

On 22/12/2012 11:35, The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?


No.

There is a standard way round people expect them to work - and none that
I have seen allow you to change the markings round.

--
Rod

On 22/12/2012 11:39, polygonum wrote:
On 22/12/2012 11:35, The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?


No.

There is a standard way round people expect them to work - and none that
I have seen allow you to change the markings round.

Meant to say - time for a whole-house pump?

Have decided if we were to move to a house which does not have decent
water pressure, I think that is the way I would go.

--
Rod

The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

It would seem that Drivels usual answer of fitting a combi is the way
forward:-)

--
Adam

On 22/12/2012 11:50, ARW wrote:
The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

It would seem that Drivels usual answer of fitting a combi is the way
forward:-)

Two combis?

--
Rod

polygonum wrote:
On 22/12/2012 11:50, ARW wrote:
The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin,
didn't check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the
internal channels the same size?

It would seem that Drivels usual answer of fitting a combi is the
way forward:-)

Two combis?

Only if THM fits a monoblock tap to the bath as well as the basin.

--
Adam

In article ,
The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

It can be difficult finding a mixer tap you like which isn't designed to
use high pressure - as most seem to come from countries where this is the
norm.

I added a pump in the kitchen to bring the 'stored' hot water pressure up
to the mains cold.

--
*Experience is something you don't get until just after you need it.*

Dave Plowman London SW
To e-mail, change noise into sound.

On 22/12/2012 12:58, Owain wrote:
On Dec 22, 11:35 am, The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

You can use a pressure reducing valve. That will reduce the cold to
match the hot, and you can claim it's new water-saving regulations...

Or pump it.

Have you had any calls for putting up Xmas tree lights?

No. Never had one. Next door neighbour borrowed my ladder to put his up.


--
Dave - The Medway Handyman www.medwayhandyman.co.uk

On 22/12/2012 11:35, The Medway Handyman wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

Same...

Had a similar problem with a monoblock that I fitted... however since
the hot was hardly ever used at that tap I forgot about it for a while
(hot dead leg was so slow to clear due to the feeble pressure and flow
rate!) Fixed it recently by switching to an unvented cylinder ;-) Works
really well now.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Dec 22, 11:35*am, The Medway Handyman
wrote:
Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? *Or are the internal
channels the same size?

--
Dave - The Medway Handymanwww.medwayhandyman.co.uk

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

--
F

Maybe some other flow reduction in the cold is needed or um, another tap!
Brian

--
From the Sofa of Brian Gaff Reply address is active
"The Medway Handyman" wrote in message
...
Fitted a monoblock single lever mixer to the bathroom basin, didn't check
to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?


--
Dave - The Medway Handyman www.medwayhandyman.co.uk

On Sat, 22 Dec 2012 11:53:54 +0000, polygonum wrote:

It would seem that Drivels usual answer of fitting a combi is the way
forward:-)

Two combis?

Why not? One for Hot, one for Cold.

--
Cheers
Dave.

On Sat, 22 Dec 2012 11:35:24 +0000, The Medway Handyman wrote:

Fitted a monoblock single lever mixer to the bathroom basin, didn't
check to see if it was suitable for mains cold/tank hot.

It isn't! Very low flow from hot.

Would it help if I swapped the hot & cold feeds? Or are the internal
channels the same size?

The channels will be the same. You can get mono-blocks designed for low
pressure systems but you have to find the real specifications for the tap
from the makers. The mono-blocks I fitted to the cottage bath room suite
are fine with less than 6' of head. Are these 1/4 turn ceramic or
traditional windy windy washer taps? 1/4 turn means you can quickly get
to full on which subjectively gives you more flow.

--
Cheers
Dave.

On 22/12/2012 23:08, Dave Liquorice wrote:
On Sat, 22 Dec 2012 11:53:54 +0000, polygonum wrote:

It would seem that Drivels usual answer of fitting a combi is the way
forward:-)

Two combis?

Why not? One for Hot, one for Cold.

I thought that - but decided it was far too silly to post. :-)

--
Rod

On Sat, 22 Dec 2012 23:22:58 +0000, polygonum wrote:

It would seem that Drivels usual answer of fitting a combi is the
way forward:-)

Two combis?

Why not? One for Hot, one for Cold.

I thought that - but decided it was far too silly to post. :-)

Ahhh... but the best bit is the change over switching for the control
wiring and plumbing so when one stops working you can switch to the other
and still get hot water out of the hot taps and cold out of the cold.

You see there is method in Drivels madness.

--
Cheers
Dave.

On 23/12/2012 00:24, Dave Liquorice wrote:
On Sat, 22 Dec 2012 23:22:58 +0000, polygonum wrote:

It would seem that Drivels usual answer of fitting a combi is the
way forward:-)

Two combis?

Why not? One for Hot, one for Cold.

I thought that - but decided it was far too silly to post. :-)

Ahhh... but the best bit is the change over switching for the control
wiring and plumbing so when one stops working you can switch to the other
and still get hot water out of the hot taps and cold out of the cold.

You see there is method in Drivels madness.

You don't need anything fancy - just cut the plastic pipes that feeds
the taps and swap them over. Obviously cut with a ...

--
Rod

On Dec 22, 6:26*pm, F news@nowhere wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room *for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

--
F

Be cheaper to get another tap!

On 23/12/2012 08:47, harry wrote:
On Dec 22, 6:26 pm, F news@nowhere wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

--
F

Be cheaper to get another tap!

Not when four taps are involved...

--
F

In article
,
harry wrote:
On Dec 22, 6:26 pm, F news@nowhere wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure.
They are so compact there is no room for the bigger waterways
needed for a tank supply

And, I suppose, that's why we've got rotten hot water pressure at each
one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this
is near impossible as the 15mm copper it comes off is pretty
inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

-- F

Be cheaper to get another tap!

It depends on your priorities. Most - if not all - of the 'designer'
mixers are only available for high pressure. And given how much they cost,
a pump isn't that much of an extravagance especially if DIYing.

Of course if all you want is taps which work - no problem getting low
pressure types.

--
*Remember not to forget that which you do not need to know.*

Dave Plowman London SW
To e-mail, change noise into sound.

On 22/12/2012 18:26, F wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

Anyone?

--
F

F news@nowhere wrote:
On 22/12/2012 18:26, F wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

Anyone?


Why not just move your existing pump to the HW cylinder outlet?

Tim

On 24/12/2012 14:35, Tim+ wrote:
F news@nowhere wrote:
On 22/12/2012 18:26, F wrote:
On 22/12/2012 17:03, harry wrote:

I think all these monoblock taps are intended for mains pressure. They
are so compact there is no room for the bigger waterways needed for a
tank supply

And, I suppose, that's why we've got rotten hot water pressure at each one.

Other posts here have got me thinking bout adding a pump to the hot
water to improve things. However, there's already one on the supply to
the shower which is teed off from the kitchen supply. Re-routing this is
near impossible as the 15mm copper it comes off is pretty inaccessible.

So, could I simply insert a second pump into the hot water outlet from
the (vented) hot water cylinder? Or would that cause problems when the
shower is turned on as I expect both pumps would then run.

Anyone?


Why not just move your existing pump to the HW cylinder outlet?

It pumps both hot and cold to the shower.

--
F

On Mon, 24 Dec 2012 16:04:33 +0000, F news@nowhere wrote:

On 24/12/2012 14:35, Tim+ wrote:
Why not just move your existing pump to the HW cylinder outlet?

It pumps both hot and cold to the shower.


From my daughter's recent saga with plumber and shower pump - it
should be fitted as near as possible to the tank as it is better at
pushing than pulling.
(And there is of course a cold water supply at that location...)

On 25/12/2012 10:06, Geo wrote:
On Mon, 24 Dec 2012 16:04:33 +0000, F news@nowhere wrote:

On 24/12/2012 14:35, Tim+ wrote:
Why not just move your existing pump to the HW cylinder outlet?

It pumps both hot and cold to the shower.


From my daughter's recent saga with plumber and shower pump - it
should be fitted as near as possible to the tank as it is better at
pushing than pulling.
(And there is of course a cold water supply at that location...)

However you are better off not using that cold supply, and instead
taking a separate one from the cold tank for the purpose. (arranged so
that when you run out of cold water, the hot (i.e. the cylinder feed)
stops first.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Sat, 22 Dec 2012 12:33:19 +0000 (GMT), "Dave Plowman (News)"
wrote:

It can be difficult finding a mixer tap you like which isn't designed to
use high pressure - as most seem to come from countries where this is the
norm.

Yes, and the Country-Farmhouse French ones are the worst for that.

I added a pump in the kitchen to bring the 'stored' hot water pressure up
to the mains cold.

I ended up fitting a pressure regulator to the kitchen cold (house was
fed from a borehole pump with pressure reservoir at around 3 bar) to
match it to the hot cylinder pressure, which was around 0.5 bar.
Otherwise, the internal passage design of the fancy French Country
Farmhouse mixer fed the mains cold back up to the hot tank.
The types of mixer where the internal passageways don't mix in the
body or spout aren't affected by this, but when customers buy them,
they don't know that.

In article ,
Grimly Curmudgeon wrote:
On Sat, 22 Dec 2012 12:33:19 +0000 (GMT), "Dave Plowman (News)"
wrote:

It can be difficult finding a mixer tap you like which isn't designed
to use high pressure - as most seem to come from countries where this
is the norm.

Yes, and the Country-Farmhouse French ones are the worst for that.

I added a pump in the kitchen to bring the 'stored' hot water pressure
up to the mains cold.

I ended up fitting a pressure regulator to the kitchen cold (house was
fed from a borehole pump with pressure reservoir at around 3 bar) to
match it to the hot cylinder pressure, which was around 0.5 bar.
Otherwise, the internal passage design of the fancy French Country
Farmhouse mixer fed the mains cold back up to the hot tank. The types of
mixer where the internal passageways don't mix in the body or spout
aren't affected by this, but when customers buy them, they don't know
that.

Think water bylaws in the UK require a design where the two can't mix
apart from at the end of the spout, to prevent siphoning. In other words
to prevent stored water entering the mains circuit should that fail. Or
somesuch. But I'll bet it's ignored these days if it still exists.

--
*Everyone has a photographic memory. Some just don't have film*

Dave Plowman London SW
To e-mail, change noise into sound.