I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to 15mm.
Hot water is softened. There is a hot feed to the washer from the
undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but
then why has it happened to 2 different taps. Plumber is also confused
as to what it might be.

Any advice/observations appreciated

Denis

DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when
I turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to
15mm. Hot water is softened. There is a hot feed to the washer from
the undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it
didn't do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump
would keep the pressure in the pipe, but it seems not to be the case.
the tap can be turned off for just a couple of minutes and when it is
turned on again we get the same lag. I can only assume it's a sticky
valve but then why has it happened to 2 different taps. Plumber is
also confused as to what it might be.

Any advice/observations appreciated

Denis

Airlock perhaps? try connecting a short length of hose from hot to cold and
turning both on, this should force cold water through the hot pipe, but I
don't know about the pump, never used one, nor know anything about them

--
Phil L
RSRL Tipster Of The Year 2008

Phil L wrote:
DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when
I turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to
15mm. Hot water is softened. There is a hot feed to the washer from
the undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it
didn't do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump
would keep the pressure in the pipe, but it seems not to be the case.
the tap can be turned off for just a couple of minutes and when it is
turned on again we get the same lag. I can only assume it's a sticky
valve but then why has it happened to 2 different taps. Plumber is
also confused as to what it might be.

Any advice/observations appreciated

Denis

Airlock perhaps? try connecting a short length of hose from hot to cold and
turning both on, this should force cold water through the hot pipe, but I
don't know about the pump, never used one, nor know anything about them

should've said .. it's a monoblock mixer tap and there are no leaks either.

On 26 July, 17:19, DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to 15mm.
Hot water is softened. There is a hot feed to the washer from the
undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but
then why has it happened to 2 different taps. Plumber is also confused
as to what it might be.

Any advice/observations appreciated

Denis

Is it just this tap or is hot water elsewhere affected?

harry wrote:
On 26 July, 17:19, DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to 15mm.
Hot water is softened. There is a hot feed to the washer from the
undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but
then why has it happened to 2 different taps. Plumber is also confused
as to what it might be.

Any advice/observations appreciated

Denis

Is it just this tap or is hot water elsewhere affected?

just this one. All taps are pumped but this one is the only one that is
slow starting.

Tap is 0.39bar minimum operating pressure,

On 26 July, 18:53, DenisP wrote:
harry wrote:
On 26 July, 17:19, DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to 15mm.
Hot water is softened. There is a hot feed to the washer from the
undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but
then why has it happened to 2 different taps. Plumber is also confused
as to what it might be.

Any advice/observations appreciated

Denis

Is it just this tap or is hot water elsewhere affected?

just this one. All taps are pumped but this one is the only one that is
slow starting.

Tap is 0.39bar minimum operating pressure,- Hide quoted text -

- Show quoted text -

Pumped???????????

DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15
second delay before any water comes out. There is no problem with the
mains cold and the hot is fed from the cylinder which is upstairs and
about 12 feet away. Pipewaork downstairs is 22mm feed reducing to 15mm.
Hot water is softened. There is a hot feed to the washer from the
undersking cupboard but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but
then why has it happened to 2 different taps. Plumber is also confused
as to what it might be.

Any advice/observations appreciated

Denis

If the cylinder is upstairs why the pump? Also it's not clear what your 2)
means. What does it mean to supply HW to the pump? How/where did you move the
HW supplied to the pump?

"Gib Bogle" wrote in message
...
DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that when I
turn on the hot tap (quarter turn valve) there is often up to a 15 second
delay before any water comes out. There is no problem with the mains cold
and the hot is fed from the cylinder which is upstairs and about 12 feet
away. Pipewaork downstairs is 22mm feed reducing to 15mm. Hot water is
softened. There is a hot feed to the washer from the undersking cupboard
but turning that off makes no difference

So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it didn't
do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump would
keep the pressure in the pipe, but it seems not to be the case. the tap
can be turned off for just a couple of minutes and when it is turned on
again we get the same lag. I can only assume it's a sticky valve but then
why has it happened to 2 different taps. Plumber is also confused as to
what it might be.

Any advice/observations appreciated

Denis

If the cylinder is upstairs why the pump? Also it's not clear what your
2) means. What does it mean to supply HW to the pump? How/where did you
move the HW supplied to the pump?

Existing kitchen gravity HW feed that came from top of 4 year old HW
cylinder (in airing cupboard upstairs) is now fed from the outlet of the
pump (also in airing cupboard) which is a 22mm feed from the side of the
cylinder. The cold water tank (softened water) is on a raised platform in
the loft and feeds the cylinder using 28mm pipework. Reason for pumping
kitchen circuit was to increase flow (which it does) and try and get over
the lag which is now worse

DenisP wrote:
"Gib Bogle" wrote in message
...
DenisP wrote:
I have a mixer tap in the kitchen and there is a problem in that
when I turn on the hot tap (quarter turn valve) there is often up
to a 15 second delay before any water comes out. There is no
problem with the mains cold and the hot is fed from the cylinder
which is upstairs and about 12 feet away. Pipewaork downstairs is
22mm feed reducing to 15mm. Hot water is softened. There is a hot
feed to the washer from the undersking cupboard but turning that
off makes no difference So far I have tried ...
1) A replacement tap (now a Franke mixer)same problem although it
didn't do it immediatley.
2) Moving the HW supplied to the 3.5bar Monsoon pump

So I am now at a loss .. I'd have thought the overrun on the pump
would keep the pressure in the pipe, but it seems not to be the
case. the tap can be turned off for just a couple of minutes and
when it is turned on again we get the same lag. I can only assume
it's a sticky valve but then why has it happened to 2 different
taps. Plumber is also confused as to what it might be.

Any advice/observations appreciated

Denis

If the cylinder is upstairs why the pump? Also it's not clear what
your 2) means. What does it mean to supply HW to the pump? How/where did
you move the HW supplied to the pump?

Existing kitchen gravity HW feed that came from top of 4 year old HW
cylinder (in airing cupboard upstairs) is now fed from the outlet of
the pump (also in airing cupboard) which is a 22mm feed from the side
of the cylinder. The cold water tank (softened water) is on a raised
platform in the loft and feeds the cylinder using 28mm pipework.
Reason for pumping kitchen circuit was to increase flow (which it
does) and try and get over the lag which is now worse

'lag' as you call it can only be air getting into the system.
When yoiu turn the tap on, can you hear air being forced out prior to the hw
appearing? - what happens if you put your finger over the tap before turning
it on? try it and let us know

--
Phil L
RSRL Tipster Of The Year 2008

Phil L wrote:

Existing kitchen gravity HW feed that came from top of 4 year old HW
cylinder (in airing cupboard upstairs) is now fed from the outlet of
the pump (also in airing cupboard) which is a 22mm feed from the side
of the cylinder. The cold water tank (softened water) is on a raised
platform in the loft and feeds the cylinder using 28mm pipework.
Reason for pumping kitchen circuit was to increase flow (which it
does) and try and get over the lag which is now worse

'lag' as you call it can only be air getting into the system.
When yoiu turn the tap on, can you hear air being forced out prior to the hw
appearing? - what happens if you put your finger over the tap before turning
it on? try it and let us know


Tried that .. no air being expelled. It can only be insufficient water
pressure to operate the ceramic valve although it does eventually come on.