High pressure system for a shower? Calling Piglet John!

[wowfudge]

I've seen a thermostatic mixer shower on sale at a bargain price (Piglet John's recommended brand), but it says it is suitable for high pressure systems. How can I find out if our system is high pressure and therefore whether it's worth going for?

Put your thumb over the hot tap at the bathroom basin. Can you stop the flow?
Then the cold tap.

How many litres per minute come out of the hot bath tap and the cold bath tap?

Will do this - to test the bath taps do the taps need to be fully open?

yep

Right - have just done this. Was no way I could stop the flow on either sink tap without water spraying everywhere. In fact I don't think I have ever fully opened either of them.

Hot bath tap - 13.33L per minute. Cold bath tap 20L per minute.

high pressure.

Sufficient flow for a good shower.

Avoid ball-type service valves, as they restrict flow. The cheap ones also tend to leak.

You can use full-bore valves, preferably Pegler ones, which are much better.

Also avoid 15mm braided flexible connectors, as they also restrict flow (you can use 22mm ones with a reducer olive if you need to)

Thank you - much appreciated. The shower I'm looking at is on eBay. Have now had better photos from the seller and it's quite noticeably scratched. I'm going to research and see if they could perhaps be polished out.

? How do you know how many L from bath taps? How do you works that out

you turn the tap full on, hold a bucket under it, time it to full.

The bucket might be e.g. 10 litres so if it fills up in 30 seconds that is 20 litres per minute (very good). If it takes 60 seconds that is 10 litres per minute (tolerable).

A bath holds about 100 litres so less than 10lpm would be very slow to fill.

10lpm is OK for a shower.

is it gold-plated or chrome?

Hi PJ, it's chrome plated. Described as light scratches. They are in noticeable places.

Actually 'very light'.

chrome is a very hard metal. It is very difficult to scratch, and impossible to polish out.

It might be limescale watermarks.

pm me a link.

Will do - thank you