Essex Flange to feed shower pump and the rest of the house

[thwaitpd]

Hi

I will be installing a shower in the loft of a house. I the instructions it requires an essex flange. The problem i have is that i cannot supply the pump with an independent feed. If i fit an essex flange can i supply the whole houe plus the pump from the one feed blanking the outlet at the top but leaving the vent in place?

 

[commercialman]

Will possibly require a negative head pump if installing shower in loft space , the other thing to consider when using an essex/surrey flange is hot water storage capacity could be effected , dependant on which type you use.

 

[thwaitpd]

The pump i have decided on is a salamander ESP CPV it is switchable between positive and negative to allow me to decide on best operation. The tank is also a big one so am not too worried about water capacity. I am mainly worried about the essex flanges capability to supply pump and house from original pipe work.

 

[muggles]

I don't quite see why you can't continue to supply the rest of the house as before, why do you think you need to blank it off and re-route the low pressure supply via the flange?

 

[thwaitpd]

Untitled

• thwaitpd
• 10 May 2011
• 1

Done a quick sketch of changes. If i leave the existing pipe in place it would allow air bubble to be drawn up to the pump, hence needing an essex flange, i have been told by the supplier that a suffolk flange is not suitable (that was going to be my original route to fix the problem.

 

[wetshoes]

If you haven't already got the pump take a look at the Stuart Turner website.
They're pumps are very good and they allow / recommend a hot water take off from the horizontal hw supply.
Might be worth a look.

 

[Terry7556]

to back up what wetshoes has mentioned, on a triton training course the trainer said for the hot feed tee off the existing horizontal 22mm with the fitting pointing downwards to solve air problems.
i see an essex fitting is over £28 in the screwfix catalogue, compared to £2 for an endfeed tee, quite a difference

 

[Technotim]

The sketch looks fine but use a Non stop Essex flange or techflange this link might help http://www.salamander-pumps.com/how-to/install-a-loft-pump.html which will explain about fitting a pump in a loft or higher than a HWC.

Techflanges are fairly cheap and easy to fit http://www.tapstore.com/techflow-products-techflange-cutter.html

You can supply the whole house with that pump but if you can put WC's etc on the mains or gravity fed saves pump noise when someone gets up for a midnight wee...and pumps in lofts are noisier and normaly less durable the airing cupboard installations.