Plumbing Device unknown

Can anybody explain the purpose of this apparent valve control under the master bathroom vanity sink?

it regulates max water temp at the sink where installed - google it!

The website is on the tag.

Not necessarily. Many times it is installed under the bathroom vanity for a shower.

Here it is:

or tub.

It’s an ASSE 1070 compliant temperature limiting device which is now required (as of IRC2012) for a two handled tub faucet. Single handle faucets have inherent anti-scald capability so the external device is only required for two handled tub faucets.

Maybe you should have visited the website that’s on the paper tag? Huh?

Oh, come on now!!! :razz:

I know this is an old post, but in Ontario, these are referred to as point-of-use thermostatic mixing valves. They regulate the water temperature for one or two fixtures only. They are most often used when a whole-house mixing valve is not desired (usually for sanitation (laundry and dishwashing) requirements.

Welcome Dan.

Note: by MB standards, this thread is still considered active/current. Many members only visit once a month, some even once a year. Now, if you dragged this out of the depths of the archives… well… we’ll let you know how we feel about that! :twisted: