Mixing valves … Mechanical or motorised, need opinions.

[Dyslexicbloke]

Hi folks ....

I am trying to decide how to go about designing a system for a CHP project.
I have reached the conclusion that I will want to monitor a number of perimeters to learn how best to manage things as much as anything else.

So given that, and the fact that I am capable of building simple electronic circuits, I found myself wondering which way I should go.

Should I use fairly standard thermostatic mixers for loop control and turn things on and off with valvs or go the whole hod and just use 3 port valves with electronic control to ‘build’ mixers.

I think the latter makes sense as they could then be adjusted remotely and potentially automatically and would only require the same temperature inputs that I will want to monitor anyway.

I would appreciate your thoughts and recommendations ..

Thanks Alistair

[Brandon]

I would go with 3 port rotary shoe valves, these will give you proper blending ability, and if you want, they come in 4 and 5 port too!

The valves themselves are not expensive, it is the control heads that are the bulk of the cost when supplied together.

These are a few of those available.  HERE.

Give me a PM if you are interested in any of these valves, and I will do my best to be of help.

[mespilus]

That 5-port valve looks  useful for loading a thermal store.

Any idea of price?

[jotec]

These could be just what I am looking for on the CHP cntrol,  they seem to do a 24v which would be ideal for PLC control.
As above what is the pricing?
D ick

[Brandon]

if you want prices, then PM me, and specify which part numbers you are after, and I will get back to you with prices.

Cheers

brandon.