mixing valve

How is the other portion of your system set up? You might want to look into a solution that has a manifold, mixer, and pump already on it. Can you feed us some other information?

for a small area of floor warming you might consider UltraFin. It can work at the same temperature as the baseboards, very simple to install.

As you may know already, your baseboard requires a different temp. water (180-160*F) than your relatively small, potential kitchen radiant-floor zone would require. Let's say you do your kit. zone really well i.e. with the right spacing of tubing runs, really good extruded plates and certainly adequate insulation below the tubing. Also the type and thickness of subfloor and finish floor materials greatly affect the effectiveness of your system. You'd prob. be looking at 140*F or less water temps. That way you could use a "dumb" (non electric) 3-way mixing valve. This could be Caleffi, Honeywell, Watts etc. brands. Typically used for mixing down DHW, i.e. "anti-scald" mixing valves. You'd also need a circulator or zone-valve depending on your set-up.

Do a little research on staple up floor systems. Depending on the climate and floor covering, you might not require a mixing valve. My experience is that many staple up systems work well without one. A simple mixing valve like a Honeywell Sparco AM102R-US-1 would work well.
You can do something a lot more elaborate, but a simple system for such a small floor can be done without one, operating at the same temps as the baseboard.

Since this seems a relevant thread to what I'm looking to do I'll ask for some quick advice.


I want to run pex tubing under the joists of our kitchen also and heat it with a network of copper pipes resting on top of the woodstove. Could someone point me towards a thread that will help me better understand the components that I'll need to do this? I'm thinking along the lines of expansion tank, a pump and a way to regulate temperature. Really appreciate it thanks!