Suprima 30 Diverter Valve / Actuator

[McKerr]

Hello All,

I've been having issues with our boiler (or rather, the diverter, I think) and wanted some advice before I commit to buying parts.

Problem started with CH not coming on. Full reset (powering off the entire system) would work tempoarily fix it, then this stopped happening.

I was then switching the diverter manually and back which would fix the system usually for a couple of days to a week, CH and HW would come on, off as per the timer, no issues.

Then the switch on the actuator on top of the diverter snapped off.


So, I'm looking to get it replaced, I have a guy who recommended replacing the entire valve system (210 ex vat) which seems excessive. The actuator is about 45 ex and a valve is a tenner at most.

I don't mind replacing the whole thing if I need to but would rather save the 150 quid + difference.

Anyone have any advice?

 

[45yearsagasman]

Make and model of the diverter would help. The Suprimas I know are heat only boilers. Is this valve in your airing cupboard?

 

[McKerr]

The valve is in the Airing cupboard.

I can't see a part number, as far as I can tell, it's a:

"Potterton Suprima 30-100 3 Way Diverter Valve 430135"

Looks identical to this:

http://www.amazon.co.uk/Potterton-Suprima-30-100-Diverter-430135/dp/B005H5YS4W

If there is a part number I can't see (cannot get behind easy due to pipes please let me know.

Thank you!

 

[45yearsagasman]

I would replace that with the Honeywell equivalent. If yours is a 3 port, then the h/well v4073 is the choice of most on here. Stuff paying Potterton prices. The h/well valves are ultra reliable, and spares are cheap if needed.

 

[McKerr]

Superb, thank you for the advice. Not bad at half the price.

I'm assuming it's a direct swap out for the existing setup without requiring any additional kit?

There are 22mm and 28mm versions, I suppose depends on my pipes (or is likely just to be 28mm?)


Have a screwfix around the corner, this the one?

http://www.screwfix.com/p/honeywell... and Cooling&gclid=CMv01efP_MACFSgFwwodPaUAWA

 

[45yearsagasman]

Yours is most likely 22mm. Simply measure the copper tube outside diameter.