Another problem:

BTW, after I'd pretty much agreed to rent this room, she told me it
needed a lot of repair. But none of the problems I've found actually
affect me much. This one affects me a little.

She has hot water everywhere but the bathroom sink. The hot water
comes from the laundry room and it's available at the washing machine
and the kitchen sink and another line goes off to the bathroom, where
it's available at the shower and the bathtub but the sink is the last
outpost on that line, and there is none or next to none. This started
after they did digging outside, on the cold water pipe, of couse, but
if that is the cause, somehow it's only affected her hot water.

The pipes are behind a beautiful tile wall. It's at least 6 feet from
the bathtub to the sink**. The valve under the sink turns easily,
quite a bit from off to on and I'm sure it's all the way on. I guess
I'll turn it on and off a few more times, but .... Is there any point
to taking the valve apart on the hope that the blockage can be pried
to pieces with an awl or something?

The faucet itself is one-piece, one handle, and when all the way to
hot, almost nothing comes out, and it's not hot. Maybe the blockage
is between the valve under the sink and the faucet, but I have no idea
how to take this strange faucet apart. ?? She's short of money or
she wouldn't be renting me the room in the first place, but the rent I
paid her will go fast if she spends it on a plumber, and heck it's
broken. What an opportunity for me.

**Here I was assuming that the problem was only at the sink. Now I
see that the diverter at the bathtub won't allow the shower in the tub
to be turned off completely, and the hot water pressure at the tub is
much lower than the cold water pressure. I've taken a shower, but
even in the US I don't understand the one-handle shower valves so I'm
not sure if the hot water pressure is low there too.

I can get a little more information but this is most of the facts.
What would you do next? What do plumbers do in this situation short
of ripping out the tile and the hot-cold water controls?

On 04/14/2017 02:20 AM, Micky wrote:
Another problem:

BTW, after I'd pretty much agreed to rent this room, she told me it
needed a lot of repair. But none of the problems I've found actually
affect me much. This one affects me a little.

She has hot water everywhere but the bathroom sink. The hot water
comes from the laundry room and it's available at the washing machine
and the kitchen sink and another line goes off to the bathroom, where
it's available at the shower and the bathtub but the sink is the last
outpost on that line, and there is none or next to none. This started
after they did digging outside, on the cold water pipe, of couse, but
if that is the cause, somehow it's only affected her hot water.

The pipes are behind a beautiful tile wall. It's at least 6 feet from
the bathtub to the sink**. The valve under the sink turns easily,
quite a bit from off to on and I'm sure it's all the way on. I guess
I'll turn it on and off a few more times, but .... Is there any point
to taking the valve apart on the hope that the blockage can be pried
to pieces with an awl or something?

The faucet itself is one-piece, one handle, and when all the way to
hot, almost nothing comes out, and it's not hot. Maybe the blockage
is between the valve under the sink and the faucet, but I have no idea
how to take this strange faucet apart. ?? She's short of money or
she wouldn't be renting me the room in the first place, but the rent I
paid her will go fast if she spends it on a plumber, and heck it's
broken. What an opportunity for me.

**Here I was assuming that the problem was only at the sink. Now I
see that the diverter at the bathtub won't allow the shower in the tub
to be turned off completely, and the hot water pressure at the tub is
much lower than the cold water pressure. I've taken a shower, but
even in the US I don't understand the one-handle shower valves so I'm
not sure if the hot water pressure is low there too.

I can get a little more information but this is most of the facts.
What would you do next? What do plumbers do in this situation short
of ripping out the tile and the hot-cold water controls?



The blockage is not likely to be in the middle of the pipe, so it's
probable that it occurs at a bend.

Turn the water off in the house and remove the shut off valve under the
sink. If there is no shut off valve just remove the pipe itself and see
if the passage is blocked

She has hot water everywhere but the bathroom sink.
The pipes are behind a beautiful tile wall. It's at least 6 feet from
the bathtub to the sink**. The valve under the sink turns easily,
quite a bit from off to on and I'm sure it's all the way on. I guess
I'll turn it on and off a few more times, but .... Is there any point
to taking the valve apart on the hope that the blockage can be pried
to pieces with an awl or something?

Turn off the water to the house, then disconnect the sinks hot water hose
from the shut-off valve under the sink. Look inside the shutoff valve as
you open and close it (use a mirror and flashlight if you need to). You
should be able to see the valve opening and closing inside. If not, the
shut off valve is probably broke and will need to be replaced.

If the valve appears to be working, connect a hose to the valve and place
it in a container. You can use the hose that runs to the sink if you can
access it. Then turn the water on and open the valve. If water comes out
you know the clog is in the sink faucet. If water does not come out there
is a blockage somewhere in the water line before the shutoff valve.

The faucet itself is one-piece, one handle, and when all the way to
hot, almost nothing comes out, and it's not hot.

If you determine the faucet is broken, it should be fairly simple and
inexpensive to install new washers, seals, or cartridges.

hot water pressure at the tub is much lower than the cold water pressure.

Do you know what kind of plumbing you have? If it's old galvanized pipe, it
may have corrosion build up inside restricting water flow. If that's the
case, the only option is to cut out the pipe and replace it.

I don't understand the one-handle shower valves

Most single handle shower valves have pressure balancing valves in them.
This allows the valve to balance the hot and cold water so you don't get
scalded if someone flushes the toilet or something.

Pressure balancing valves can stick, which would typically give you only
hot or cold water when you turn on the shower.

Anthony Watson
www.watsondiy.com
www.mountainsoftware.com

On Friday, April 14, 2017 at 11:17:21 AM UTC-4, HerHusband wrote:
Most single handle shower valves have pressure balancing valves in them.
This allows the valve to balance the hot and cold water so you don't get
scalded if someone flushes the toilet or something.

Pressure balancing valves can stick, which would typically give you only
hot or cold water when you turn on the shower.

Anthony Watson
www.watsondiy.com
www.mountainsoftware.com

And the pressures on each supply have to be fairly close. These valves will shut off one side if the pressure is more than 5 psi greater than the other. That number was quoted to us from the manufacturer, so I'm not sure it applies to all brands.

On Fri, 14 Apr 2017 15:14:12 -0000 (UTC), HerHusband
wrote:

She has hot water everywhere but the bathroom sink.
The pipes are behind a beautiful tile wall. It's at least 6 feet from
the bathtub to the sink**. The valve under the sink turns easily,
quite a bit from off to on and I'm sure it's all the way on. I guess
I'll turn it on and off a few more times, but .... Is there any point
to taking the valve apart on the hope that the blockage can be pried
to pieces with an awl or something?

Turn off the water to the house, then disconnect the sinks hot water hose
from the shut-off valve under the sink. Look inside the shutoff valve as
you open and close it (use a mirror and flashlight if you need to). You
should be able to see the valve opening and closing inside. If not, the
shut off valve is probably broke and will need to be replaced.

If the valve appears to be working, connect a hose to the valve and place
it in a container. You can use the hose that runs to the sink if you can
access it. Then turn the water on and open the valve. If water comes out
you know the clog is in the sink faucet. If water does not come out there
is a blockage somewhere in the water line before the shutoff valve.

The faucet itself is one-piece, one handle, and when all the way to
hot, almost nothing comes out, and it's not hot.

If you determine the faucet is broken, it should be fairly simple and
inexpensive to install new washers, seals, or cartridges.

hot water pressure at the tub is much lower than the cold water pressure.

Do you know what kind of plumbing you have? If it's old galvanized pipe, it
may have corrosion build up inside restricting water flow. If that's the
case, the only option is to cut out the pipe and replace it.

I don't understand the one-handle shower valves

Most single handle shower valves have pressure balancing valves in them.
This allows the valve to balance the hot and cold water so you don't get
scalded if someone flushes the toilet or something.

Pressure balancing valves can stick, which would typically give you only
hot or cold water when you turn on the shower.

Anthony Watson
www.watsondiy.com
www.mountainsoftware.com
In North America for the last 10 years or so pressure balancing
faucetes have become popular, but the lower priced stuff still doesn't
have PB valves (and none in my house do). I rather doubt the house in
question has high end fixtures.

Also, since both the tub and sink have low pressure, and given the age
of the place. I'd put better than even money it's got some old
galvanized pipe - and the hot lines plug up before the cold generallt
speaking.

In North America for the last 10 years or so pressure balancing
faucetes have become popular, but the lower priced stuff still doesn't
have PB valves (and none in my house do). I rather doubt the house in
question has high end fixtures.

I did not catch how old he said the house was.

If it was built in the last 15 years or so, most plumbing codes require
some form of anti-scald device on a shower. The pressure balancing valve
is the type I am familiar with, but there may be other designs too.

If the house is older than that, it probably does not have a pressure
balancing valve unless the shower valve was replaced in recent years.

Also, since both the tub and sink have low pressure, and given the age
of the place. I'd put better than even money it's got some old
galvanized pipe - and the hot lines plug up before the cold generally
speaking.

I agree that's the most likely cause, but valves do stick or break so it's
work checking. That's certainly a lot cheaper and easier than replacing
plumbing pipes.

Anthony Watson
www.watsondiy.com
www.mountainsoftware.com

On Friday, April 14, 2017 at 3:20:40 AM UTC-4, Micky wrote:
Another problem:

Easy test. Switch the hot and cold hookup to the sink. It will eliminate 'expensive' test.