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One last thing on this. The pump was already quieter than my previous one (which must have been at least 9 years old), but I've further quietened it by standing it on a little platform made of a bit of plywood bonded to 1" thick piece of closed cell foam. I only used the plywood cause I had a...

Interesting. I wonder how common this setup is. There is another, smaller, tank behind it, with some pretty manky looking water in it, which I presume is for the central heating. Not worked this bit out yet...

Not sure quite why the tank is so small. There's certainly room for a larger one. I wonder is the issue to do with weight? As regards the valves shutting off, it was the overflow which alerted me to the need to change one.

I've been getting to know the plumbing in my house a bit better in the last couple of weeks. One of the things which struck me as an oddity when I first spotted it a while back was that the cold water tank in the loft has two ball valves (one of which I had to replace recently because of a...

No, I do listen. I read 50 reviews of the pump on the Screwfix website, the great majority of which were very positive, and I read your 'review', where you kept repeating that the pump was 'shyte', without further explanation. So on balance I thought the pump was probably a good buy, especially...

Thanks for the tip. Fortunately they were already in the 'on' position, so nothing needed to be done (yet).

Well, new pump duly installed and all working very nicely. Similar flow to previous pump, and a little quieter, I would say. Only hairy moment was when the connection to one of the out pipes was leaking, which necessitated draining off the header tank again. I opened up the connection to find...

Fortunately there are isolation valves on the flexible connector pipes for the new pump.

My apologies, it seems that the hot water flow to the shower pump has in fact stopped (by virtue of half a bucket or so spewing out a short while ago, probably).

As I said, the hot water stops running as soon as the loft tank is empty. From the little bit of research I just did, this is apparently how it's supposed to be - it's a safety feature. I got this from http://www.diyplumbing.co.uk/drain-hot-water-cylinder/: "This is because of how a...

I think I do need to, because there is no way of shutting off the hot water feed to the shower pump otherwise. If I were to detach the hot water inlet pipe from the shower pump, I'm pretty sure hot water would pour out of it.

I'm trying to install a replacement shower pump. To do so, because there are no isolation valves on the inlet pipes, I believe I have to a) empty the cold water tank in the loft, and b) empty the hot water cylinder. I've drained off the loft tank OK, and have tied up the ball valves so it...

What's the problem with it?

Thanks for that. It does look to me that the Salamander pump I mentioned should be a swap-in for the Stuart Turner. I checked out the flow rate and it was OK (I spoke to a tech guy at Salamander). Just doing one last check of the pipework for blockages, as I don't want to buy a new pump only to...

Here are some more images, although I suspect they won't reveal anything that helpful. Anyway, I've done the drain-down and could not see a mesh filter as such on the cold inlet, having detached the pipe at the point it connects to the pump. There seemed to be a little limescale there, which I...

The isolation valve in question is actually on a pipe which is capped off about 15cm above the valve. It looks like it originally went through to the bathroom and may be a relic of an earlier shower installation. Tomorrow morning I'll be doing the drain-off and filter examination. Thanks, guys...

The whole heating system will need an overhaul before too long. Boiler is ancient. Trying to get by until it's necessary, though.

No more really useful pictures possible, unfortunately. There is no isolation valve on the cold feed to the hot water cylinder. (However, next to the tank in the loft there is a smaller one which is presumably for the central heating, and there is an isolation valve on the cold feed coming from...

Yes, not planning to replace the pump without first doing the filter checks. Not 100% sure loft insulation has got into the piping, as I only know some fell into the tank (from a badly made insulating cover), but as I can see some at the bottom of the tank still it may be that this was the only...

It doesn't appear to be reliably boosting either - it's stopping and starting, and when it runs, running with such low pressure I suspect it isn't actually doing its job at all. We have a Mira mixer shower with a single control for temperature, no means of setting the pressure separately (i.e...