Browse store

Sentinel X400 System Restorer 1Ltr (89458)

1Ltr. Apply to existing systems for the removal of sludge and deposits. Iron oxide is broken down and dispersed through flushing.

  • Removes Sludge
  • Breaks Down Iron Oxide
  • Removes Sludge
  • Breaks Down Iron Oxide

More Info

£16.99INC VAT (£16.99/Ltr)

Add to basket for...

Sentinel X400 System Restorer 1Ltr is rated 4.7 out of 5 by 30.
  • y_2017, m_2, d_20, h_13
  • bvseo_bulk, prod_bvrr, vn_bulk_0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_30
  • loc_en_GB, sid_89458, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix

Add to saved list...

Save
Rated 5 out of 5 by from Restoring old central heating Using it in an old central heating system which has not been cleaned in decades. Will leave in the system for 4 weeks. May be my imagination, but after a couple of days, already there seems to be an improvement in some of the radiator cold spots.
Date published: 2016-12-14
Rated 5 out of 5 by from So good I used it again Second time using this first was several years ago. It worked well then. I have come up against a rather stubborn blockage in very old system and put the two bottles in an empty system. Topped up with water. Early days yet but previous cold spots are showing signs of warmth after only two days. Will keep my fingers crossed
Date published: 2016-12-06
Rated 5 out of 5 by from Quality product. Quality product easy to use. Did a great job of cleaning the heating system.
Date published: 2016-12-04
Rated 5 out of 5 by from Did the job I had a couple of radiators with cold spots at the bottom, these have improved since adding the product. I am leaving it for a week before flushing but seems to have done what I needed
Date published: 2016-11-22
  • y_2017, m_2, d_20, h_13
  • bvseo_bulk, prod_bvrr, vn_bulk_0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_30
  • loc_en_GB, sid_89458, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix

Can the x400 be used for combi boilers?

Asked by: THINGTWO
Hello there, Yes, Sentinel X400 is suitable for use with combi boilers. Kind regards, Customer Services
Answered by: Sentinel Product Help
Date published: 2017-02-05

Can the x400 be left in the system longer than the 4 weeks? Can the restorer damage the system if it is left in indefintely? Should it be flushed out and the system refilled with a rust inhibitor?

Asked by: MickB321
Hi there, the Sentinel X400 must be flushed out and the system refilled with Sentinel X100. If you require any further information please visit the Sentinel Protects website. Kind Regards Customer Service
Answered by: Sentinel Product Help
Date published: 2017-02-09

Does X400 also remove limescale?

Asked by: Damo999
Hi there, to remove limescale you require Sentinel X200. Kind regards Customer Service
Answered by: Sentinel Product Help
Date published: 2017-01-15

Can i just pour this into the header tank?

Or does it need to be poured directly into a radiator?
Asked by: PaulC84
Hi there, Sentinel X400 cleaner may be introduced into the heating system via the expansion header tank by the following procedure. Circulate the system at temperature for 15 minutes Isolate the feed to the header tank Drain the system from the lowest point Refill the system via the header tank WHILE ADDING the X400 Circulate the X400 cleaner in accordance with the instructions on the label Kind regards Customer Service
Answered by: Sentinel Product Help
Date published: 2017-01-07

How much do I need?

I have a domestic microbore system with 11 radiators. How many litres of x400 do I need?
Asked by: rich11
Hi there, 1 litre of Sentinel X400 is sufficient to treat a typical domestic system of 8-10 radiator panels. Larger systems should be dosed with 2 litres. Kind regards Customer Service
Answered by: Sentinel Product Help
Date published: 2016-12-29
  • y_2017, m_2, d_20, h_6CST
  • bvseo_bulk, prod_bvqa, vn_bulk_0.0
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_7
  • loc_en_GB, sid_89458, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
Specification
Brand Sentinel
Manufacturer Guarantee 1 Year Guarantee
Model No X400
Pack Size 1
Pieces in Pack/Case 1
Product Type System Restorer
Sealant Adhesive Volume 1 Ltr
Volume 1 Ltr

Downloads

Safety Data Sheet (COSHH)