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Window Cleaning Forum / Re: Xmas Tips
« Last post by zesty on December 11, 2025, 08:11:06 pm »Just a fiver so far 

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But what happens if you are facing up a reasonably steep hill ? I found it was drawing air as the water went to the back of the tank once you get to half a tank full and the outlet was above the water levelI don't get the drama about a flat tank being a problem. I just park the van 'the right way' so the outlet is at the lowest point.
You can’t necessarily do that though can you especially in a one way street etc if you live in a relatively flat area like Lincolnshire you would prob get away with it but you certainly can’t ware we live , I don’t know a single cleaner that has a flat tank as they won’t work here .
My area has some flat areas and some pretty hilly bits. My outlet is on the nearside front so generally works with the camber of the road.
But what happens if you are facing up a reasonably steep hill ? I found it was drawing air as the water went to the back of the tank once you get to half a tank full and the outlet was above the water levelI don't get the drama about a flat tank being a problem. I just park the van 'the right way' so the outlet is at the lowest point.
You can’t necessarily do that though can you especially in a one way street etc if you live in a relatively flat area like Lincolnshire you would prob get away with it but you certainly can’t ware we live , I don’t know a single cleaner that has a flat tank as they won’t work here .
My area has some flat areas and some pretty hilly bits. My outlet is on the nearside front so generally works with the camber of the road.
I don't get the drama about a flat tank being a problem. I just park the van 'the right way' so the outlet is at the lowest point.I’m used to parking where I can pull the hose as I walk. My work is compact and if I was in a street where it might be downhill at the start of the street and uphill at the end of the street I would find it a PITA having to turn the van to face the opposite direction.
I don't get the drama about a flat tank being a problem. I just park the van 'the right way' so the outlet is at the lowest point.
You can’t necessarily do that though can you especially in a one way street etc if you live in a relatively flat area like Lincolnshire you would prob get away with it but you certainly can’t ware we live , I don’t know a single cleaner that has a flat tank as they won’t work here .
You just need to fit a non-return valve on the tank outlet. Cost about a fiver and pretty much eliminates air ingress! I've been using one for years. 👍
That doesn’t work when the vans parked up hill and the water level is below the water outlet , I found this to be the main issues with a flat tank.
Errrrrr.... Obviously! But it does prevent air ingress from the water movement when the level drops to a low point.
But quite often you end up with half a tank of water you can’t use if parked on a hill, that was the main issue I had then you got air in the system and it was a pita when you did have water above the outlet again ,.