I want to install some way to shower dogs outside when they come back from a walk, particularly in winter, and to be able to do so using tepid water. I do not want to go inside to turn the water on.
What I would like to do is reuse an old thermostatic mixer valve I have by installing it inside the house and leading its output through the wall. The temperature and flow would be pre-set but the outlet controlled by a second valve. I imagine it's inadvisable to install a thermostatic valve outside.
Assuming what I am trying to do is reasonable, I see two options for this second valve. The simple one would be to have a lever valve outside the house to release the water when needed. If I kept the pipe run outside very short, essentially an elbow between the pipe passing through the wall and the lever valve, what kind of freezing risk would there be?
I can avoid all risk of freezing by keeping the pipe passing through the wall dry when not in use. This could be done with a normally closed solenoid valve indoors operated by a switch outside. Obviously this would be more hassle so would it be necessary?
We have unvented DHW and the installation would be in an urban part of South East England if that makes any difference.
What I would like to do is reuse an old thermostatic mixer valve I have by installing it inside the house and leading its output through the wall. The temperature and flow would be pre-set but the outlet controlled by a second valve. I imagine it's inadvisable to install a thermostatic valve outside.
Assuming what I am trying to do is reasonable, I see two options for this second valve. The simple one would be to have a lever valve outside the house to release the water when needed. If I kept the pipe run outside very short, essentially an elbow between the pipe passing through the wall and the lever valve, what kind of freezing risk would there be?
I can avoid all risk of freezing by keeping the pipe passing through the wall dry when not in use. This could be done with a normally closed solenoid valve indoors operated by a switch outside. Obviously this would be more hassle so would it be necessary?
We have unvented DHW and the installation would be in an urban part of South East England if that makes any difference.