Gonna be getting some of this gear to seal a leak which I can not get to without hacking my new bathroom to pieces. Long story, but it feeds the towel rail, which is fed under a newly tiled (and UFH) floor, then up a wall sandwiched between a bath and a cupboard.

Tending to sway towards Fernox as it is top of the range, but will the Sentinels and other cheapo brands (eg Screwfix No Nonsense range) be just as good?

Either way, is the injector tube the better one to go for, from an installation point of view? How exactly do they fix to radiator bleed valves without the water pi$$ing out all over the place?

In article ,
Cordless Crazy wrote:
Either way, is the injector tube the better one to go for, from an
installation point of view? How exactly do they fix to radiator bleed
valves without the water pi$$ing out all over the place?

You shut off both lockshield valves and drain down the rad at least
partially and the filler tube screws in place of the bleed valve. It is
easier if you can disconnect the rad at one of the lockshield valves as
otherwise you're trying to force in the gunge against air pressure.

--
*A closed mouth gathers no feet.*

Dave Plowman London SW
To e-mail, change noise into sound.

Cordless Crazy wrote:
Gonna be getting some of this gear to seal a leak which I can not get
to without hacking my new bathroom to pieces. Long story, but it
feeds the towel rail, which is fed under a newly tiled (and UFH)
floor, then up a wall sandwiched between a bath and a cupboard.

Tending to sway towards Fernox as it is top of the range, but will the
Sentinels and other cheapo brands (eg Screwfix No Nonsense range) be
just as good?

Dunno, but the difference in price isn't enough to worry about compared to
the agro involved.

Either way, is the injector tube the better one to go for, from an
installation point of view? How exactly do they fix to radiator bleed
valves without the water pi$$ing out all over the place?

The injector tube can be used on a combi system, the liquid ones have to be
poured into a tank.

I've used two types of injector systems, with both you turn off a rad both
ends & inject the stuff into said rad via a bleed valve & it then disperses
around the system.

One type comes in a cartridge & is used with a mastic gun. The one I used
(Fernox I think, long time ago) didn't mention draining a little water from
the rad, but you do need to - you can't get 300ml in without draining 300ml
out.

The other one was from Wickes & you buy a rubber 'bulb' type pump with
plastic tubes each end & a liquid leak sealer. You use the pump to pump out
water from the rad via a bleed valve then reverse it & pump the sealer back
in.

Both worked & stopped the leaks, I reckon the Wickes one was easier to use.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

Tending to sway towards Fernox as it is top of the range, but will the
Sentinels and other cheapo brands (eg Screwfix No Nonsense range) be
just as good?

The screwfix variant worked fine on my system fwiw

"Cordless Crazy" wrote in message
...

Gonna be getting some of this gear to seal a leak which I can not get to
without hacking my new bathroom to pieces. Long story, but it feeds the
towel rail, which is fed under a newly tiled (and UFH) floor, then up a
wall sandwiched between a bath and a cupboard.

You must be sure that the towel rail is fed from the heating primary circuit
and not from secondary hot water.

If the latter is the case then it will not be possible to dose it up as it
is the same water that comes out of the tap.

Steer clear of very cheap sealer as some are not very effective. I think you
would be better off going for the fernox stuff.

The super concentrate inject type is easy to use as there is no draining
water off and the possible problems of air locks when topping up again. This
comes with a variety of attachments to fill via radiator vent pin or plug or
filling loop if you have closed system.
Filling through the loop is the easiest and quickest.

To fill through the rad turn off both valves and remove the pin or plug and
set up the cartridge in the mastic gun and connect to the rad, turn on one
of the valves (it won't work if you don't) and pump in the super
concentrate. When that is done turn off the rad valve again and remove the
adaptor and refit the plug or pin again turn on both valves again, job done
in less than 5 minutes and no mess or air locks.

On 12 Sep, 21:19, Cordless Crazy Cordless.Crazy.
wrote:
Gonna be getting some of this gear to seal a leak which I can not get to
without hacking my new bathroom to pieces. Long story, but it feeds the
towel rail, which is fed under a newly tiled (and UFH) floor, then up a
wall sandwiched between a bath and a cupboard.

Tending to sway towards Fernox as it is top of the range, but will the
Sentinels and other cheapo brands (eg Screwfix No Nonsense range) be
just as good?

Either way, is the injector tube the better one to go for, from an
installation point of view? How exactly do they fix to radiator bleed
valves without the water pi$$ing out all over the place?

--
Cordless Crazy

Sentinel one worked fine for my Grannies system.