Negative Head Pump on a Positive Head System

[jaydebruyne]

Any reason this can't be done?

Even if I take off the pressure vessel and cap it off???

The tank is probably less than 1 meter above the shower head so not much pressure to begin with anyway...

 

[lame plumber]

Ha ha ha have a read of this first Power Shower Pump Guide - What is Negative Head?

 

[jaydebruyne]

Ha ha ha have a read of this first Power Shower Pump Guide - What is Negative Head?

Have read it and my question remains. The pressure vessel is there to kick start the flow of water which flicks the flow switch and starts the pump, in situations where there is no gravity to start them.
That link says you can use a NH pump on a PH system if there are restrictors on the outlets which cause a lack of pressure.

 

[jaydebruyne]

Found my answer.. It's a showermate universal 1.8bar pump and as per the stuart turner site they can be used in either a positive or negative head setting.

http://www.stuart-turner.co.uk/media/136776-SystemsPressurePumpsTypes.pdf?v=3013201552

Thanks for the link, Lame.. Much appreciated

 

[lame plumber]

i was chirpy about converting a neg head to pos head, is it that you have bought a neg head pump and are determined to use it?

 

[plumbdoctor]

Negative head will work on a positive head system on the salamanders without the need to do anything.

 

[lame plumber]

Negative head will work on a positive head system on the salamanders without the need to do anything.

thats useful to know , bit of an expensive option though

 

[jaydebruyne]

i was chirpy about converting a neg head to pos head, is it that you have bought a neg head pump and are determined to use it?

No its just that I have one taking up space in my flat and my brother wants rid of his electric shower so said I'd fit a bar mixer for him with a pump..

Saves him forking out for a dedicated positive pump

I know you were chirpy mate, sorry I just reread my reply I didn't mean to sound blunt ... Apologies Lame

 

[lame plumber]

No apologies needed, I guessed you were being cheap

 

[jaydebruyne]

No apologies needed, I guessed you were being cheap

Lol