[A & J Owen Window Cleaning]

have got three backpacks and goin to buy a tank so i wonder if a could hook up two backpcks on a different usage for my wife and i and a splinter from the tank.

[richard jagger]

I don't think a 40 psi  backpack pump will push water through a 50 metre hose and up say a 30 foot (second floor) pole and deliver enough pressure to clean a window.I would think you would a 80 psi pump which are not in a backpack. I know with my backpack if the battery is no full house the pressure at 30 foot is much lower.

[A & J Owen Window Cleaning]

my backpack will flow the water to 30 ft so i dont know why it wont run from a tank

[gto]

as he said you have the hose as well, so 50 - 100m of hose either 6mm or 8mm puts a lot of extra resistance on the pump.

it may work fine but it wont be for long. it will be too much strain for the pump

[richard jagger]

Back pack pumps are only 35 - 40 psi and do not a have strong head as they are only made to spray plants on a short length of pipe. we are pushing by using them to clean windows on a short hose.They bwill nwork but you will be killing the  pump.\\open your back pack and see what psi of the pump is.If its over 70- 100psi will do the job.I njust cannot see a stronger pump in a backpack. But check.

[A & J Owen Window Cleaning]

you are right there mates what about hooking another pump along side gota few spare in the shed

[dave.e]

you are right there mates what about hooking another pump along side gota few spare in the shed

Hi mate why don't you get one of theses

http://www.ebay.co.uk/itm/Marine-Automatic-Fresh-Water-Pump-12v-2-6-lt-min-70psi-/380294058896?pt=UK_CarsParts_Vehicles_BoatEquipment_Accessories_SM&hash=item588b4ad390#ht_1048wt_905

[A & J Owen Window Cleaning]

cheers dave u ok thats a good price for a pump treble pumps in bilston want £80 

[dave.e]

cheers dave u ok thats a good price for a pump treble pumps in bilston want £80 

I know mate it pays to shop round. i was thinking of having one so i could do away with the controller and only being 2 amps just think how long our battery's will last. dave