Nordstrand 90W Water Pressure Booster Pump

Both myself and Plumberboy have bought these pumps and they work well for the money, I fitted one in my garden, it powers the water from the water tub all over the garden and produces 12 litres per minute,
Its worth a punt for the money but won't give hot and cold, It will do one or the other,

Thanks a lot for that.     My CW is pretty strong coming off a high pressure mains, so I only need 1 impeller really.

I think I might be able to get away with that device for what I had planned.
As I said I have a bit of positive head & I guess that pump would bring me up to <1 bar in this situation.
It should definitely solve my taps issue tho.  Since fitting a couple of monobloc taps I've noticed the flow drop off a lot on the HW both upstairs & downstairs, the remaining 3/4" bath tap still delivers HW with a 'good' rate tho (& it's upstairs) so I assume bore is the choker on the monoblocs.

I have started to wonder about the 2 & 3 way mixers that are popular now, I wanted to have a bath filler & a shower head connected up so would one of these devices work OK or can the pressure get choked by the bore of the block ?  

maybe it's just where I'm looking but taps for a bath don't seem as popular as centralized thermostatic controllers nowadays.


BTW I appreciate all the advice, my field is normally PCs so whilst it isn't this boards focus (!) anyone have any issues with a windows PC & I may be able to point you in the right direction. 

My own board.  Sounds ominous! 
Hopefully I haven't bitten off more than I can chew.

Do you know what the reasoning is for saying no to mix pumped & mains pressure?  Would have thought if the mixer valve has a non-return valve it would protect the system.

I just discovered this booster pump
1.5 cubic meters per hour (m3/h of flow rate)
/25.00 Liters per minute (L/min / flow rate)
I wonder how that compares to bar pressure ratings, can't seem to find a flow rate to BAR conversion....force vs flow, the height to which it lifts must be part of the calculation maybe I'll email em & see what they say.

Thanks Plumberboy.
Looks like I'm going to be doing a fair bit of messing about to figure this lot out.    

arfurchrysaik -  I was really optimistic about that until I saw prices & that there have been a few that have been made extinct - Newteam Jetstream Venturi, Aquadart Hydroflo and Croydex H2O - all now obsolete.
So is the tech not good or are manufacturers ditching it because they can't be bothered with complaints from people who don't like cool showers etc?

The trevi A5699AA is still about but I've seen 1 reviewer say the cheaper Aquadart Hydroflo and Croydex H2O worked better


I saw this & wondered if I could add something like this to a single pumped HW feed to even things up -

Deva PEV002 Thermostatic Pressure Equalising Valve

& then I saw this

www.showerpowerbooster.co.uk/product/manual-shower-power-booster-sp1/

Anyone tried one?

Also I asked the seller & was told the 150w booster I linked to above outputs 0.2 -0.6 BAR, less than the 90w's claimed output!?

The manufacturer of this little booster gives some info on what the unit can do.
I like the simple installation, but considering the comparative cost & (longer) warranty on a regular 1.5-2.0 bar pump I am a bit bemused.



output graph  

https://youtu.be/7QHxK0JYtQw


Blog on showers

Finally have time to think about fitting this pump.



I have hit 2 quandaries on this:

1 - can the pump be connected before the expansion T connection?  Makes me think it would push up that as well....

On pic - Blue being the only space large enough to cut the pipes.  Green is where I think it should go but the space & the fact the 'designer' has clustered several pipes together means I cannot get to a space large enough to slide in a pipe cutter without bending pipes & removing the HW cylinder - NOT my idea of a beginners job!



2 - this is more curiosity than concern, the pump diagram shows the body of the pump angled relative to location. For a vertical connection the unit has the motor raised above & the impeller below.

I can bolt it to the wall & was going to direct the pipework with elbows anyway so not really a big deal.

Struck me as unusual as all the salamanders etc seem happy to sit with motor parallel on a horizontal surface.

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As always any feedback greatly appreciated!!