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Plumbersmatenew

Hi All,

Pulling my hair out here...15mm tail to a bathroom towel rail. On a loop to the main 22mm flow so it is always hot, whether demand for HW or CH. Pipe is 'virtually' blocked, presumably with solidifed sludge, as flow is a cupfull per minute. Needless to say, rad is cold and the wife very unhappy.

Have tried: Sentinel 1) X400 for 2 weeks 2) Connecting mains hose directly to pipe with system drained down 3) rigged a tap-connector to a short length of hose, jubilee clipped to a bicyle valve and pumped with car pump up to about 4 bar......all to know avail.

I am reluctant to use acidic chemicals as the pipework is 26 years old.

Pipe runs under tiled floor so am reluctant to take floor up

Can't rod it as there are 2 90 degree bends in the 15mm, which is about a metre long from rad valve to where it joins main flow.

Aquavac, or equivalent, won't touch it as more suction is required.

Any ideas, please?
 
Hate to be the bearer of bad news but pumped to 4 bar not shifting and gone hard. dont think much will touch that not even slightly acidic cleaner.
 
Check this isn't under floor
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Could you rig up a hose and funnel and fill with some form of acid to blocked pipe say overnight to see if that clears or partly clears?
 
If you can get to the end of the pipe can you feed down a cheap usb inspection camera to see what's blocking it? ( camera available on eBay at around £12-£15 ) at least you could try and see what your dealing with.
 

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