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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: C.C.S. on February 12, 2026, 09:42:52 pm

Title: Auto shut off 4040 ro
Post by: C.C.S. on February 12, 2026, 09:42:52 pm

Hi,

I'm getting an new van , el3ctric this time and I'm planning my setup as I'll be selling the current van with the whole system.
At the  moment the Ro system it's in the van and I'm planning to keep it of the van for the new one .
I'll be keeping it in the garage but I don't have space for a holding tank.
The plan is to filter the water  straight into the tank in the van and I'd like to avoid overfilling it . So there system would need to have a auto shut off.  The ro system will be boosted aswell.
So not sure how to go about it regarding the auto shut off .
Any ideas.

Thanks

Title: Re: Auto shut off 4040 ro
Post by: colin bird on February 13, 2026, 05:10:55 pm

You need to put a ball valve in your tank so when it’s full it’s shuts the water coming in off but having said that not sure how you stop the booster pump from stopping pumping  but I’m assuming it will recognise the stop of flow

Title: Re: Auto shut off 4040 ro
Post by: dazmond on February 13, 2026, 06:36:10 pm

Here's mine....a powered PF 4040 (with solenoid) mounted on a piece of worktop with heavy duty castors. I drop the  vertical shut off valve in the top of the tank via a wire coathanger. Works well! ;D

(http://www.cleanitup.co.uk/smf/1771007767_Screenshot_20260213_182803_Photos.jpg)

Title: Re: Auto shut off 4040 ro
Post by: Simon Trapani on February 13, 2026, 07:05:16 pm

Speak to Ian at Spring controllers or a cheaper option is a Clarke CBM240E

Title: Re: Auto shut off 4040 ro
Post by: dazmond on February 13, 2026, 10:53:12 pm

(http://www.cleanitup.co.uk/smf/1771023058_Screenshot_20260213_224831_Photos.jpg)

I just put this around the hole at the top of my tank. The stainless steel,vertical float valve was £8  from amazon