shower problems | Showers and Wetrooms Advice | Plumbers Forums

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hi all...

I need a hand with a shower problem we have.

I am a competent diyer (many years as a landlord!) - but am struggling with getting a shower back to good pressure.

Ok, the main shower in our house was an exposed mixer (traditional look) with 22mm inlets - coming from a newish worcester boiler which can kick out 18lpm+ of hot water.

At first the original mixer valve was amazing - felt very powerful and we were really chuffed with it.

A week or so ago we were experiencing an issue with hot water and it turns out the shower valve was on the brink of death... so we thought we'd get a replacement.

first I tested the water pressure in the house (3 bar) and I chose an appropriate shower valve which would apparently kick out 35lpm - but it had 15mm inlets as we struggled to find a 22mm inlet shower valve (if anyone knows where I can get one then it'd be hugely appreciated!)....

So - I pulled out half a wall and swapped the old 22mm pipe with 15mm - fitted the valve and stood back - expecting a shower that would rip my face off.... we were disappointed! I removed the restrictors from the new valve with little impact...

At the min we are getting roughly 2litres in 15 seconds out of the new shower valve (which is about the same as the kitchen tap that has restrictors on ...)

soooo.... can anyone help... The original 22mm inlet valve was from an ebay auction - and they now seem to be as rare as rocking horse faeces... but the 15mm inlet is so uninspiring.

I have removed the static shower head to see if there were any restrictors there - and when you turn the valve on you get the same flow without the shower head.

finally.... just to check - i stupidly turned the water on with the valve off... there is a LOAD of water flying out of the pipes... I'm glad we have a wetroom!

Any advice appreciated.... I am willing to spend some cash on this - say upto £1000 - you really cant beat a strong shower.
 
The vast majority of modern shower valves use 15mm inlets, however all manufacturers recommend plumbing in 22mm up to the valve. Make sure the valve is ported for a Combi.
 
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