Wayne Whitney wrote:
On 2007-03-20, jim wrote:

Not that Iam aware of they will not heat or make up for lack of hot
water. If you are going to run the system you describe it will cost
you a fair amont of electricity

No, no, obviously I don't expect the valve to provide water outside of
the range of temperatures supplied to it. But some "thermostatic"
valves say they don't adjust for fluctuating supply temperature, just
supply pressure, e.g. some Deltas. That doesn't seem very
thermostatic to me.

Cheers, Wayne

then they are not thermostatic, they are pressure balanced, which is
code nowadays

I have a hans grohe shower valve, from the despot, that I absolutely
worship. You set it once. Ever.

A real thermostatic valve ought to work well for your app. It 'should'
fire up full hot, then start mixing as the hot water comes up. I notice
mine has a little spike if you are under it before it hits its temp,
just a half second of overshoot, long enough to reach for the valve
instinctively, but not long enough for you to turn it.