Flow switch for domestic hot water

Is this sort of thing any good?

You need to post the RS Part number I am afraid, then the OP needs to search for that number. Their site relies on bloody cookies instead of just having the part number in the address bar like most people do!

Sparks...

While the site does use cookies, the product navigation is done in javascript. Still a crap way of doing it.

If you want to post a direct link to an rs product, use the "E-mail to colleague" feature. This will generate a nice link for you, like this:

Sorry - try part# 256-578 or paste the following link into your browser:

...

If anyone knows where to get the sort of switches used in (some) Worcester combis I'd like to know. They comprise a brass Tee with 3/4" Male threads on each port and a plastic switch with a paddle on a stalk which fits into the branch of the Tee. (Probably available as a W-B spare, but I don't know what model it came from, having found the bits I'm using in a skip.)

"Roger Mills" wrote in news: snipped-for-privacy@individual.net:

Thank you for your suggestion, Roger; certainly the sort of thing, but I need a much lower flow rate to switch.

The Grundfos switches at about .02litre/min, and although I don't think I need to be that sensitive

No, but I only get around 3 litres/min unboosted, and that's very marginal for the RS one - it's also got a nice big 16A switch, not like the horrid little weldtite reed switches we'd avoid like the plague when I was at work.

And I now doubt whwether the Grundfos tripped at .02 l/min; I had to have the tap half on before it kicked in.

mike

Another one which I think can be mounted at any angle: