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Gravity shower pressure query

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djbobbins

from United Kingdom

Joined: 04 Jul 2007
Posts: 13
Location: United Kingdom

PostPosted: Wed Jul 04, 2007 12:30 pm Reply with quote

Hi

Wonder if anyone can help me with a query regarding my shower.

We moved into a 1970s house a couple of months ago. There is an upstairs shower room, with a Mira shower fed from the hot water cylinder. I\\\'m led to believe the shower dates back to the late 90s. The header tank in the loft is of a decent size (3 foot across and a couple of foot deep at a guess) and has been built up on a plinth - giving about 2 metres of head between the shower head and the base of the header tank.

The hot water pressure at the upstairs taps is fine - but the shower is pathetic - so much so that if I take the nozzle out of the holder on the wall and point it upwards, the water just dribbles out of the jet holes.

I thought this might be to do with limescale on the shower head so I cleaned it but it has actually made the situation worse. The water in the area is quite hard and I wondered it the innards of the shower might be encumbered with limescale affecting the flow rate?

Any thoughts / suggestions much appreciated.

Cheers
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Grimly Feendiish

from United Kingdom

Joined: 04 Jul 2007
Posts: 8
Location: United Kingdom

PostPosted: Wed Jul 04, 2007 1:54 pm Reply with quote

Buy a new shower. B&Q have them on special offer at the moment. Better still, a power shower. But be sure to get a CORGI registered plumber to install it for you.

Hope this helps!

Grimly
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gas4you

from United Kingdom

Joined: 23 Feb 2007
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PostPosted: Wed Jul 04, 2007 3:25 pm Reply with quote

Could just need a service kit and cleaning of the cartidge.

NEVER buy anything from B&Q you won't get good service.Go to a local plumbes merchant.

You don't need to have a CORGI in to fit a shower icon_eek.gif not unless you are planning another holocaust icon_lol.gif
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JohnD

from United Kingdom

Joined: 15 Nov 2005
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Location: Hampshire,
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PostPosted: Wed Jul 04, 2007 6:40 pm Reply with quote

Grimly Feendiish wrote:
Buy a new shower. B&Q have them on special offer at the moment. Better still, a power shower. But be sure to get a CORGI registered plumber to install it for you.

Hope this helps!

Grimly


How many shares do you have in Kingfisher? You're always recommending B&Q boilers and stuff.
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djbobbins

from United Kingdom

Joined: 04 Jul 2007
Posts: 13
Location: United Kingdom

PostPosted: Fri Jul 06, 2007 6:23 pm Reply with quote

so what's the craic with a service kit? I am feeling a plumber's bill coming on...
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JPC

from United Kingdom

Joined: 10 Aug 2004
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Location: Leicester,
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PostPosted: Fri Jul 06, 2007 7:08 pm Reply with quote

is the shower pressure crap even when you lower the head to the height of the bath taps. is the bath tap pressure ok ?
have u taken off the hose/head and seen if any blockages ?
have u checked from where the shower if fed ?
i assume the cold is also tank fed ?
r u saying there is 2m from water level to shower height ?
is it fed from the bath taps or a mixer on the wall ?

ah yes.....dont buy from b and q (although they do have there uses) and just to repeat.....corgi is only gas stuff and there safety -not an indication of quality work either !!!
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djbobbins

from United Kingdom

Joined: 04 Jul 2007
Posts: 13
Location: United Kingdom

PostPosted: Fri Jul 06, 2007 8:48 pm Reply with quote

Many questions, answers in order:

shower pressure / flow is still dreadful when showerhead is reduced to tap height and pressure on the taps is fine

have taken off showerhead and no blockage (water flow out of hose still dreadful with head off)

not checked where shower is fed from

there is at least 2m of head to the exit point on the cold water header tank in the loft - so probably 2.5m to the surface of the water

It is a Mira Excel fed from a mixer on the wall, not from bath taps

Thanks for showing interest!
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Onetap

from United Kingdom

Joined: 19 Jun 2006
Posts: 1809
Location: Essex,
United Kingdom
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PostPosted: Fri Jul 06, 2007 9:01 pm Reply with quote

Grimly Feendiish wrote:
B&Q have them on special offer at the moment. Better still, a power shower. But be sure to get a CORGI registered plumber to install it for you.

Hope this helps!

Grimly


Why?

CORGI does gas, nothing but gas. Showers use water. Many Corgis are clueless about anything but gas and they aren't too good on the gas either.

Be sure that you get a competent non-Corgi plumber.
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Onetap

from United Kingdom

Joined: 19 Jun 2006
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Location: Essex,
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PostPosted: Fri Jul 06, 2007 9:07 pm Reply with quote

Check the isolating valves from the tank to shower valve are fully open.

Get the installation and maintenance manual from the manufacturer's website. Check whether there are strainers/filters on the shower inlet and, if so, descale them.

Get a service kit, dismantle, descale and re-assemble the shower valve (or pay someone to do it for you). You probably need to do that every year or 2 anyway.

Check the shower hose isn't perished and restricted. Some cheap ones have a narrow, restrictive bore when new.

That should sort it.
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Onetap

from United Kingdom

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Location: Essex,
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PostPosted: Fri Jul 06, 2007 9:13 pm Reply with quote

gas4you wrote:
icon_lol.gif



Not a laughing matter.
Really.
I apologise for him.

In the great mosaic of victory, I lay this priceless jewel, my only son.

On a headstone in a cemetery in Holland.
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djbobbins

from United Kingdom

Joined: 04 Jul 2007
Posts: 13
Location: United Kingdom

PostPosted: Fri Jul 06, 2007 9:16 pm Reply with quote

Cheers

Have had a look around, found the manual and it's definitely got inlet filters on both hot and cold.

Will get a service kit and see how I get on.

Hose is not perished and has got a decent sized bore (well, 10mm or so, not 5-6mm like some I've seen in shops, as you say.)

(P.S. - to all above who mentioned Corgi, even I know Corgi registration isn't needed for water work; much better to go by recommendation. Unfortunately moving to a new area makes that a bit tricky...)
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Rob

from United Kingdom

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Location: London,
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PostPosted: Sat Jul 07, 2007 2:18 am Reply with quote

deleted! **
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djbobbins

from United Kingdom

Joined: 04 Jul 2007
Posts: 13
Location: United Kingdom

PostPosted: Mon Jul 30, 2007 1:07 pm Reply with quote

Success!

Changed the inlet filters and shower is vastly (and I mean vastly) improved.

Bit concerned that the isolation valves on both the hot and cold water feeds to the shower didn't isolate properly but at least I can get clean now.

Once I'd drained the header tank down (owing to duff valves) dismantling the shower, changing filters and reassembling took under 10 minutes.

top banana...
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Buzzark

from United Kingdom

Joined: 29 Mar 2007
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Location: Cheshire,
United Kingdom
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PostPosted: Mon Jul 30, 2007 2:43 pm Reply with quote

If you're changing the valves, fit full bore lever valves.
You won't be restricting the flow then through the valve and when we were gravity fed this did help a bit.
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