I am looking for a fully motorised zone valve. i.e. one with two power terminals, one for opening and one for closing, (+ neutral)
Most zone valves that I have come across are Spring return valves.
I have tried:
Danfoss - No Invensys/ Drayton (who do have a product but has an indicator potentiometer rather than switch terminals) Horstman - No Sunvic - SZMV 2305 Myson - No Siemens - No
Can anyone suggest a suitable product or other manufacturers that I could try?
Do a google for 'sunvic momo'. That product was advertised in last months plumbing & heating magazine. It looks pretty good although I haven't tried one myself as I usually buy Honeywell valves.
If you do get one, please reply with what you think of it.
Martyn
Only Sunvic do Mo-Mo domestic types, I think.
Commercial type valves are generally either 3-wire type (Mo-Mo; proportional control is by electronis elsewhere) or proportional (0-10V control signal & 24 or 240 V ac power supply, with electronics on the valve). All the commercial valve manufacturers do these; Sontay, Satchwell, Landis & Staefa, Trend, Belimo, etc.. Cost more than domestic types.
Thanks for the replies. Sunvic are sending me the specs of one of their Mo-Mo which are not yet on their web site.
The instructions for my Danfoss programmer describe the use of Mo-Mo valves, as one of the alternative configurations. I was therefore surprised when I could not easily buy suitable valves. I had expected Danfoss to make them!
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.