Sentinel X400 Sludge Remover Rapid Dose 300ml

By Sentinel Product code: 35318 Pack size: Each

£18.98 Exc. VAT £15.82

Product Details

High performance cleaner, specifically designed for cleaning older central heating systems. A non-acid treatment which restores circulation to radiators and pipework. Ruthlessly efficient formula shifts built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution.

Technical Specification
Brand Sentinel
Unavailable offshore 1
Manufacturer ID X400RD-12X300ML-GB
Safety Data Sheet click here
Type Cleaner
Volume (L) 0.3
Volume (ml) 300
Container Type Liquid
Range Name X400
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 6pm for Monday delivery
  • Orders placed after Sunday at 6pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 or £5.00 for orders over £25, to arrive before 12pm on the scheduled days above

Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)

Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)

Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page Items over 30kg can only be delivered next Business Day Mon-Fri. Orders placed after 9pm Thursday will be delivered the following Monday
More about Delivery & Returns
Click & Collect details

Collection Details

We are fully open and delighted to welcome our customers into our branches. Our opening times are 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday

We advise that you check your local branch is open on the branch locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the branch you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Please wait for your text or email before coming to collect it and be aware that we will still have health & safety measures in place, so we ask that you observe the branch guidelines.

Don’t forget your mobile number – Please ensure that your mobile number is added so that we can text you when your order is ready to collect.

Sentinel X400 Sludge Remover Rapid Dose 300ml is rated 4.3 out of 5 by 8.
Rated 5 out of 5 by from I will use nothing else, this aerosol is amazing! 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!
Date published: 2021-03-06
Rated 5 out of 5 by from Sludge Remover Easy to use and reasonably priced
Date published: 2021-02-21
Rated 4 out of 5 by from Early days Seemed to make a bit of an improvement
Date published: 2021-02-16
Rated 1 out of 5 by from Definitely avoid the rapid dose 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.
Date published: 2021-02-06
Rated 5 out of 5 by from Easy to use and effective 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.
Date published: 2020-12-16
Rated 5 out of 5 by from Great product fantastic price Excellent product and very competitive price
Date published: 2020-06-08
Rated 5 out of 5 by from Simple to Use It's already starting to clear my blocked radiator. Easy to follow instructions and videoonline if you want.
Date published: 2020-06-07
Rated 4 out of 5 by from Sorted underfloor heating that stayed cold 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 ..
Date published: 2020-02-17
  • y_2021, m_9, d_22, h_24
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.19
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_8
  • loc_en_GB, sid_35318, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_toolstation-gb
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 20.96ms

You might also like

Hey, browse our site often?