C/H circulating pump

[stuart313]

Does anyone do normal pumps anymore? can you still get one of the red 3 speed pumps nowadays, I need one for a gravity system.

Anyone know where I can pick one up tomorrow in the Manchester area, I will try plumb centre but with all this eco bks I bet they only sell the modulating ones.

PS I know it may not be the same size as the original 20 year old one.

[stuart313]

Pheo said:

http://www.screwfix.com/p/grundfos-alpha-2l-15-50/...

Three fixed speed 4 variable.

What's wrong with a modulating one?

The same problem as the one you have posted, the price.

this ismore like it

http://www.screwfix.com/p/flomasta-central-heating...

Out of stock though everywhere.

[stuart313]

I ended up getting a modulating one from roolstation and with a quick flush out the system is up and running again. However the speed control is a bit confusing on it. It does either constant curve or proportional differential pressure, this means nothing to me, its a vented system that does radiators only, whats it best to set it on.

this is the only bumf I can find on it.

https://www.colglo.co.uk/file.php?filename=DAB6016... (page 3)

Thasnks.