Recent content by conradh

Thanks for the clarity on that, but what I've got isn't exposed pipe, it's the screw threads of a cut-off valve which supplies the washing machine. This looks like the least effort point for inserting a tee to a small under-sink filter (and separate tap), but I also (high mains pressure) need...

Hi @denso13, thanks for the quick reply! I was looking at this kind of thing [Amazon UK link].

What is the name of the fitting I should be looking for to insert a pressure reducing valve under my kitchen sink, given that the pipe itself has an outside diameter of 15mm, *but* the pipe's screw fitting that I'd be inserting the PRV into has thread diameter 24.4mm-26.6mm (measuring the inside...

"ianmcd" recommending mcdonald-engineers.com? I don't think there is a relationship, but you gotta at least say something :) Nice to see a Scottish engineering company producing something in this arena. Their unvented cylinder is called Powerflow. Unfortunately they tell you almost nothing...

Hi Aragorn, Ah, right - no, I wasn't missing this. A well-designed tank will minimise churn, so that as hot water is drawn out of the top of the tank, and cold water flows into the bottom, the hot and cold layers will stay separate --- at least for a while: I agree they'll even out to...

Re: electric shower... Even adding in the cost of standing loss, the fact that night rate electricity is half the price makes a cylinder cheaper. By my reckoning they're about on a par if all you do is have one 5 minute 4.5 litre-per-minute shower per day, but as soon as you shower longer...

Aragorn84: either I'm misunderstanding you or you're misunderstanding me. Everything hot cools down. Even if you're not drawing off hot water, any cylinder will lose heat over the course of the day, and it'll lose more if it's not well insulated. It's called standing loss. As soon as your...

Yeah, that's the message I'm beginning to get: I think the law was relaxed a bit recently, so it does seem to be safe and legal. The special plastic is just a heat-resistant one as far as I understand it. You'll end up with a "tundish" in your airing cupboard, which will have hot water visibly...

Yeah, I don't know. Advocates of thermal stores argue that they're simpler and safer because you don't need three layers of safety devices or a special certification to install them - or to notify building control officers about the installation, or to pay for annual maintenance, where unvented...

Thanks for the reply Ian! Can you tell me why you'd prefer unvented? It does look as if the pressure relief pipework is going to be hard/expensive to do if it's even at all possible, so I'm trying to find out why unvented would be better than a thermal store... As I said, my gut feeling is...

Hi, I'm in a one-floor flat, currently with a cold water tank about 4 foot above floor level and an electric immersion tank underneath it at floor level (no gas, Economy 10 electricity). This obviously is a disaster for anything except a bath: there's a shower hose attached to the bath taps...