Best 2 port 22mm zone valves normally closed

[bacon_sandwich]

So heres the story, my own boiler was replaced a year ago. All 4 zone valves were replaced at my suggestion..... for reliability reasons (they were 20 years old) - Now the motor has conked out on one of the new ones in 15 months. So before some random stuff gets put in - I want a 20 year life valve like the ones taken out, which of course have been binned so no idea what they were. :blush5:

 

[Worcester]

Honeywell V4043H

 

[townfanjon]

Personaly I have always gone honeywell , overall they seem to be best . Good luck with your 20 years !!! Lol

 

[snowhead]

Honeywell for the longest life.
BUT it's unlikely anything produced nowadays will last 20yrs.

If it does, it's a freak of the production like, not the norm.

 

[bacon_sandwich]

Thx, Honeywell it is then. cheers

 

[Best]

Plumb Centres brand motorised valves are cheap and I hear made by Honeywell.
I have a Honeywell valve I had to replace at about 3 year old. Poorly made inside & teeth slipped.

 

[gassafe]

Yep, honeywell ain't like it used to be, nor the drayton stuff! Iv fitted & had to replace heads or motors within a couple years on some occassions!

 

[Nostrum]

Honeywell valves arent anything special these days, we spec Drayton now as they seem to last the same amount of time but are slightly cheaper and have a quick release actuator head which is handy.

 

[Nostrum]

Honeywell valves arent anything special these days, we spec Drayton now as they seem to last the same amount of time but are slightly cheaper and have a quick release actuator head which is handy.

Don't really rate any of the other Drayton products though.

 

[Deleted member 25704]

For domestic heating, some motorised valves work on a rotating shoe to open and close the valve, some have a paddle, and the Honeywell ones have a rubber ball.

The rotating shoe type valves made by Danfos can be unreliable in existing systems because magnetite gets between the rotating shoe and valve wall - this creates a resistance to the movement of the valve, which in turn burns the motors.

Honeywell valves have no such problem because of their rubber ball design. In addition Honeywell valves have 'heavy duty' blue wired motors compared to the orange wired 'standard duty' motors in other types of valve. Honeywell valve are easily repaired by replacing said motors so the whole actuator does not need to be replaced.

Honeywell are indeed the best motorised valves for domestic purposes.