Changing zone valve

[bsr]

Hi All

Do most zone valves use compatible nuts & spacing for a swap?

I have a failed Honeywell 2 port. The other zone uses a Drayton which has been very reliable.

Can I try and do a quick swap to a Drayton (towels in place)? If I need to cut olives / pipe then it'll be a drain down job which is a pig since it's a one story flat and the zone valves are at near floor level with no easy way to drain the system.

In that case the local Toolstation has a "Corgi" branded Honeywell copy so I'll get one of those.

Thanks

 

[CBW]

I wouldn’t bother with the Corgi ones. You could measure the distance between and if it’s the same the nuts and olives will likely be the same.

 

[Exedon]

The Honeywell valves have a finer thread pitch than most others.
Only way to be certain of a quick swap is like for like.
No chance of getting away with just a head swap?

 

[CBW]

No chance of getting away with just a head swap?

OP wants to use toolstation cheapo Corgi head

 

[old duffer]

OP wants to use toolstation cheapo Corgi head

are you suggesting that is not cost effective? please show your cost of ownership calculations please. every day is a school day..as they say

 

[CBW]

are you suggesting that is not cost effective? please show your cost of ownership calculations please. every day is a school day..as they say

I didn’t say anything about it not being cost effective, but I’ve read how theses valve heads fail considerably quicker than the original Honeywell. I’ve never owned one, so can’t give cost of ownership calculations.