[andy east sussex]

I want to upgrade my ninja to bigger pump think its only the 135 pump I would like more pressure so question is has anyone upgraded bought and installed the parts by your self ?

[stuart_clark]

You will be limited as there isn't a lot of room inside a ninga but a 200 psi pumptec may go in

[Robin Ray]

A 400 psi pump will go in as it is also made with one. It needs to be mounted on an L shaped piece of metal so it can stand upright with the pump head down. It will also need a pressure gauge and a regulator which can handle the extra pressure.

Personally I wouldn't bother.

[john martin]

There is this  ...

http://www.carpetcleanersstore.co.uk/product/aquatecpump220

[Robin Ray]

I think that pump has no bypass and works on a pressure switch. Therefore it will have to be plumbed in with no pressure control. I may be wrong but it may be worth checking this out first.

[michael toomey]

you could sell your ninja then buy a second hand ninja with 400psi and flow control and pressure gauge,i actually have one for sale

[john martin]

I think that pump has no bypass and works on a pressure switch. Therefore it will have to be plumbed in with no pressure control. I may be wrong but it may be worth checking this out first.

Yeah , internal bypass , but i'd say u could use with pressure control . If someone is using a very basic ' stair tool ' for upholstery they may have to adjust pressure down , but many of the dedicated upholstery tools would be fine at whatever max pressure it produces , im sure its not some high flow monster pump but just a bit better than a 130psi if hes not happy with that .
I'v posted that link several times , wonder did anyone try them , could be a handy solution for many .
This is the non switch version tested
https://www.youtube.com/watch?v=UTXaNEvgfRU

[andy east sussex]

how much are you looking for your ninja