Can a thermostatic valve be added with the current valve and piping

sinkus

Jamie Hall

Don't see those very often... that is an ingenious arrangement which allows one to run hot water radiators with only one end coupled.

I don't see any good reason why you couldn't cut a thermostatic valve into one of the pipes. What you can't do is replace the existing valve and connections.

EBEBRATT-Ed

Agree with Jamie the old valve will have to stay

KC_Jones

Some information on that valve.

https://heatinghelp.com/systems-help-center/honeywells-unique-valve/

sinkus

Thanks for the information Jamie!

mattmia2

There is a Danfoss valve with a a lance and I think another one from another manufacture that could replace that vale. The thing is the Honewell Unique valve is also a bypass so if you stop flow to that valve, anything else in series will also not heat. If it is separately connected to the mains then you can install a TRV before the unique valve(or in place of), otherwise you need a bypass.

sinkus

Thanks Matt, it is fed right off the main.

Mad Dog_2

Never seen that.  Where is that job?  Mad Dog

sinkus

New Jersey