Zone valve replacement

[MikeJhn]

Do you guys find there is a definitive life for Zone valves, there is for the synchronous motors, but what about the movable valve?

 

[ShaunCorbs]

These days surprised if you get more than 5 years

some cheap ones 2 at best

 

[MikeJhn]

Thanks for the reply.

So you think both valves at twenty two years old are doing well to have lasted this long 😂

When its manually opened I get water movement through the vale, but think its leaking past the valve as the hot water is scalding hot, thermostats have been replaced.
[automerge]1607445620[/automerge]
Anyone have an insights into what else could be wrong, before I drain everything down to replace what may or may not be the zone valve?

 

[ShaunCorbs]

I would say there passing unless you’ve had this problem from day dot

 

[MikeJhn]

Thanks Shaun, it's a new problem started about four days ago, I will source a new valve and whilst at it put in a couple of full flow valves on either side, not looking forward to draining down the system though. 😱

 

[ShaunCorbs]

Thanks Shaun, it's a new problem started about four days ago, I will source a new valve and whilst at it put in a couple of full flow valves on either side, not looking forward to draining down the system though. 😱

open vent or sealed ?

 

[MikeJhn]

It's an open vent system, so should not be a problem, thanks for your conformation on the problem, just getting up in the loft at my age to shut off the ballcock is a job I am not looking forward too. 😜

 

[ShaunCorbs]

It's an open vent system, so should not be a problem, thanks for your conformation on the problem, just getting up in the loft at my age to shut off the ballcock is a job I am not looking forward too. 😜

you could turn the water mains off depending on the position of the tap

 

[MikeJhn]

My life would not be worth living if I turned off the mains, my OH would hang draw and quarter me, and that's after she has attacked my with a meat clever, but a seriously good idea, I will tell her you suggested it. ☠

Ha just remembered the main tap is in the boiler house, silly old duffer.

 

[MikeJhn]

Just to update this thread, we where correct and the zone valve was by passing the shut off, just re-placed the zone valve and all back to normal, thanks for the help.

 

[MikeJhn]

For information I paid near £50.00 for a new Honeywell zone valve when all I really needed was a valve body without the control mechanism, this I found on line at under £10.00 should have thought of this first, also should have thought that as the DHW zone valve had problems the CH valve as the same age probably has not got a lot of life left and should have replaced this at the same time, bit of preventative maintenance, new valve body on its way, the only thing I have wasted is a new fill of Fernox and some of my time, they say you live and learn, well into my 70's and still learning. 😜

Checked back through my records and the Honeywell zone valves where installed nearly thirty years ago, no that is not a miss-type really that long ago, didn't they do well, you get what you pay for.🥳

 

[ShaunCorbs]

For information I paid near £50.00 for a new Honeywell zone valve when all I really needed was a valve body without the control mechanism, this I found on line at under £10.00 should have thought of this first, also should have thought that as the DHW zone valve had problems the CH valve as the same age probably has not got a lot of life left and should have replaced this at the same time, bit of preventative maintenance, new valve body on its way, the only thing I have wasted is a new fill of Fernox and some of my time, they say you live and learn, well into my 70's and still learning. 😜

Checked back through my records and the Honeywell zone valves where installed nearly thirty years ago, no that is not a miss-type really that long ago, didn't they do well, you get what you pay for.🥳

I would always recommend replacing the head with the body as you can guarantee 6 months later it will fail and the price of the head is the same as the both combined so I wouldn’t, also the old valves without the dimple in the lid arnt compatible with new bodies

 

[MikeJhn]

That's odd, both valves have the dimple head cover, but are indeed old by modern standards.