Zone Valve suggestions

Ed Lentz_2

Thank you Tim and Ein for your help. A new Taco 218 instead of that swing check and I think we have a winner.

Thanks again

Ed Lentz_2

Zone Valve suggestions

Being a HO and having installed the system myself I got what I paid for. But I need a professionals help. I have a 6 zone pex under floor staple up system with a controller with Warm weather shutdown, a Boiler with an indirect for DHW. I have a separate zone of baseboard with its own Taco 007, I have a 3 zone Taco zone controller. The baseboard is getting flow thru the pump past the check valve which is there to keep flow from the other way. It appears that I should have an electric valve instead of the check. Would that be appropriate? And can someone suggest an online source for such a valve. My thought is to remove the check valve and install a 110 v valve that is opened when the circ for that zone starts. Does this sound right?
Thanks

Timco

Zone valves are low voltage, first off. If you have a circ for each zone, no zone valve is needed. If you have one circ, and it serves the entire system, you need zone valves. As a zone calls for heat, the zone valve opens for that zone, and the single circ starts pumping. If you have seperate circs, the controller turns on just the circ that wants heat. One or the other.

Terry

in a word

no.

What I think you wanted to put in was a flow check.
What I think you put in, is a swing check.

I would put a zone valve on this loop IF:
supply & return tees are NOT close together.
If the primary pump has enuff "umf" to provide adequate flow for this loop.

if a motorized valve is to be used... use a 24 Volt slow-acting zone valve (suitable for heating)
Do not use a 120Volt Fast acting solenoid valve or you'll get water hammer big time.

I would just change the check if you don't have a proper one. (Flow Check will not allow flow if pump not running. whereas a swing check only allows flow in one direction and does nothing to stop "ghost flow"

Regards,
EIN

Ed Lentz_2

Well, EIN I think you got it. I am sure I have a Swing and not a check valve. The ghost you spoke of is the flow thru a pump when the pump isn't operating? I'll send a pix of what I have and what I percieve I need to do.
Thanks

Ed Lentz_2

Ed Lentz_2

Here's what I have. The flow is with the arrow from the circ. to the baseboard then back to the return line to the boiler. So I need a check valve there instead of the swing and that will stop flow thru the pump when the other circs are running, and only allow flow when the near circ is running.