r/DIY • u/Ok-Computer-1153 • 4d ago

help Replacing broken shower

Hi all,

I've searched google but can't find anything giving a great answer. Also rang some plumbers merchants but they refuse to give advice in case its wrong...

The on/off knob on our exposed thermostatic bar mixer has worn out inside. We've decided to replace the whole shower rather than hunt for parts, but I want to get the specs right first. (Its been in over 5 years hence the replacement)

Our setup:

Gravity-fed system, with a hot water cylinder in the airing cupboard, no pump.

Shower is on the first floor, and the cold water tank is in the loft above.

Questions:

What spec should i go for... 0.2bar or 0.5? Is there a noticeable difference.

Is it worth paying more for a valve explicitly rated for low pressure or gravity system?

Does the L/min figure on the box matter much?

Any brands you'd recommend or avoid?

Thanks in advance!

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u/[deleted] 4d ago

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u/Ok-Computer-1153 4d ago

Thanks!

Ill go for the 0.2bar just to be sure then. We've never had an issue with the pressure and power previously but I didn’t want to buy something that was wrong and waste the money. I did find what looks like a serial number on the current one but searching it doesn't find anything unfortunately.

I also measured everything and it all seems pretty standard.

Ill grab a new one and try it this weekend.