Bemused - Choice of 3 Port Motorised Valves


Postby nailed812 » Fri Feb 03, 2012 9:45 pm

Hi All, looking for a 22mm 3 port motorised valve at Screwfix and Toolstation and a bit bemused by the choice. Was intending to go for a Honeywell but its nigh on £100 and a Horstmann is £43. There's also offerings from Danfoss, Siemens, Corgi and Sunvic.

Any advice please.

Thanks.
Roger.
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Postby plumbbob » Sat Feb 04, 2012 8:50 am

Like everything different manufacturers offer different quality of products. Generally, Honewell is considered the best.

There are various types of TPV. Are you sure you are comparing like for like?
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Postby nailed812 » Sat Feb 04, 2012 9:35 am

Posibly not. I have to admit that my post is based on my posibly out of date recollection that the Honeywell isa 3 port valve with mid position and that it remains in the 'last' position when demmand is satisfied.

My assumption is that the other 3 posrt valves listed work in the same way?

Thanks for the reply.

Roger.
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Joined: Tue Nov 15, 2011 8:41 pm


Postby plumbbob » Sat Feb 04, 2012 4:45 pm

nailed812 wrote:My assumption is that the other 3 posrt valves listed work in the same way?


There are two versions of the valve, - 3 wire two position valve and a 5 wire three (mid) position valve.
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Postby nailed812 » Sun Feb 05, 2012 7:56 am

Ok thanks, so limiting my choice to 5 wire, does anyone have any thoughts on the other manufactures, ie not Honeywell? I like Honeywell but if I can save £50 on another that will do the job just as well I will.
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Postby plumbbob » Sun Feb 05, 2012 11:02 am

nailed812 wrote:Ok thanks, so limiting my choice to 5 wire, does anyone have any thoughts on the other manufactures, ie not Honeywell? I like Honeywell but if I can save £50 on another that will do the job just as well I will.


Honeywell I imagine account for 9 out of 10 valves fitted in domestic installations and for this reason I usually replace them on a like for like basis. The Honeywell valves unlike others are metal cased which makes them more robust possibly, but I wouldn't say they are superior in any other way.

I always offer a cheaper valve to customers and some choose this option. Sometimes the customer is on a budget, other times it is because the fitting of a new boiler in the near future will make the new valve redundant so lifespan is not a particular issue.

If we go the route of a cheaper valve then I just buy whatever model the merchant has on offer.
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Postby nailed812 » Sun Feb 05, 2012 12:16 pm

Ok, thanks for your help.
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Joined: Tue Nov 15, 2011 8:41 pm


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