Does not work when inserting through bleed valve or top of radiator on modern single or double radiators due to the “T” piece in the top preventing the cleaner entering the radiator, it just blows back!
A lot of sludge in the system this may have helped
Easy to use and cleared the whole system after flushing through with clean water filled with Sentinel X100 System Inhibitor Rapid Dose 300ml
Solved issue within a hour or so. System behaving now!
Easy to add to the system especially when already full! Attachment which allows you to add via the filling loop is much easier than via a radiator .
Unimpressed with system. Had to modify the accessories to fit to my standard boiler fill point. When bottle attached the bottle fill valve did not properly depress. Had to empty out into a container by hand (messy) then drain system and disconnect pipe work to empty in. Wasted my money. Fernox next time.
Seemed to do the job but dosing tube arrangement worst I’ve ever used.
I'm pretty sure someone had used part of this already. When I got home from collecting I realised the tube, which wasn't connected to the top as per the product image, already had fluid in it. And the cap on the product's seal was broken. It's supposed to run for up to 30 second filling your system, I counted to 8. Problem with returning is I've already driven out once already to make a collection, and I knew this was the last bottle they had.
This aerosol is great. No messing about with the 1 ltr bottles. No mess or waste.
Can use from two hours to 4 weeks in the system. But you must get it out!
Easy to use and reasonably priced
Seemed to make a bit of an improvement
Bought 2 bottles of the rapid dose x400, 1st bottle didn't work as it didn't have enough pressure and the solution trickled out off the bottle. The plastic connector on the second bottle snapped off inside the Maglean dosing valve. I had to remove the Magclean and spent around an hour picking the plastic out with a pin.
This is the first time that I have used the X400 rapid dose product and I have to say that it was really easy to use and very effective at clearing the blockage caused by sludge in a large radiator. The application tube fits easily into the bleed valve of an isolated radiator and fully feeds into the rad within 30 seconds with no mess and no need to drain the system.
Excellent product and very competitive price
It's already starting to clear my blocked radiator. Easy to follow instructions and videoonline if you want.
Had 2 underfloor heating loops that stayed cold . Ran this around for a couple of weeks and they heat up now . Be sure to flush throughly for the system otherwise you’ll just move the sludge to another part ..
