I'm about to replace a poorly shower with a new one. I see in the
instructions that the shower head mustn't reach below 25mm above the bath.

With the way members of the current family shower, ie with the ability of
moving the shower head by hand this has led to some opposition where the
shower head should have limited movement.

I am aware that the reasons cited are to stop non-clean water from entering
the cold water system.

However if I fit a double check valve in the flow to the shower, won't this
remove the rules regarding the shower head and height of bath? Would a
potential reach into the bath then be allowed?

On Sun, 18 Jun 2006 17:05:47 +0100, "Fred" wrote:

I'm about to replace a poorly shower with a new one. I see in the
instructions that the shower head mustn't reach below 25mm above the bath.

With the way members of the current family shower, ie with the ability of
moving the shower head by hand this has led to some opposition where the
shower head should have limited movement.

I am aware that the reasons cited are to stop non-clean water from entering
the cold water system.

However if I fit a double check valve in the flow to the shower, won't this
remove the rules regarding the shower head and height of bath? Would a
potential reach into the bath then be allowed?

This may be easier to fit -

http://www.screwfix.com/app/sfd/cat/...14173&ts=48753

~~~

Regards

Rob Sutton

Rob Sutton wrote:
On Sun, 18 Jun 2006 17:05:47 +0100, "Fred" wrote:

However if I fit a double check valve in the flow to the shower,
won't this remove the rules regarding the shower head and height of
bath? Would a potential reach into the bath then be allowed?

This may be easier to fit -

http://www.screwfix.com/app/sfd/cat/...14173&ts=48753

Doesn't say if it's WRC approved. The regs on back siphonage are by & large
complete cobblers, but enforceable.

I once had a row with Mid Kent Water over a pressure washer. They wouldn't
allow a double check valve even though it was WRC approved. They suggested
that, if the 4" polyprop water main were turned off for maintenance, the
pressure washer could suck so hard that it would cause the pipe to collapse.
In their dreams.


--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257

"Rob Sutton" wrote in message
...
On Sun, 18 Jun 2006 17:05:47 +0100, "Fred" wrote:

I'm about to replace a poorly shower with a new one. I see in the
instructions that the shower head mustn't reach below 25mm above the bath.

With the way members of the current family shower, ie with the ability of
moving the shower head by hand this has led to some opposition where the
shower head should have limited movement.

I am aware that the reasons cited are to stop non-clean water from
entering
the cold water system.

However if I fit a double check valve in the flow to the shower, won't
this
remove the rules regarding the shower head and height of bath? Would a
potential reach into the bath then be allowed?

This may be easier to fit -

http://www.screwfix.com/app/sfd/cat/...14173&ts=48753


Many thanks.

The screwfix one is a single check valve. I thought where back siphonage
could occur a double check valve would be required. I suppose I could
always use 2!

"The Medway Handyman" wrote in message
. uk...
Rob Sutton wrote:
On Sun, 18 Jun 2006 17:05:47 +0100, "Fred" wrote:

However if I fit a double check valve in the flow to the shower,
won't this remove the rules regarding the shower head and height of
bath? Would a potential reach into the bath then be allowed?

This may be easier to fit -

http://www.screwfix.com/app/sfd/cat/...14173&ts=48753

Doesn't say if it's WRC approved. The regs on back siphonage are by &
large complete cobblers, but enforceable.

I once had a row with Mid Kent Water over a pressure washer. They
wouldn't allow a double check valve even though it was WRC approved. They
suggested that, if the 4" polyprop water main were turned off for
maintenance, the pressure washer could suck so hard that it would cause
the pipe to collapse. In their dreams.



I can see where they are coming from though. Irrespective of whether a
check valve is fitted, the collapse of the main may be a possibility if the
pipe couldn't cope with a vacuum. In order to preventing soiled water from
entering the pipe it also assumes that everything connected to the same main
is also fitted with working check valves.