Drayton Drain-Off Tail Piece 0705902 Product Code: 3450R

Converts standard TRV to drain-off valve. Enables draining of radiator or system.


  • Brass Construction
  • Polished Chrome Finish


Fixings Not Required.
Additional Information
Technical Specification
  • Brand : Drayton
  • Construction Material (Plumbing) : Brass
  • Fixings Supplied : Fixings Not Required
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

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€6.95 Incl. 23% VAT

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Drayton Drain-Off Tail Piece 0705902 is rated 4.3 out of 5 by 6.
Rated 5 out of 5 by from Very useful indeed I'm changing each rad in my house & putting these on wherever I go. Granted, I've got the floor up and am resiting pipework and the rads but these make future maintenance and decorating so much easier and quicker. One room I fitted a nice Stelrad 1400x450 rad that sat perfectly central under the window - sods law the drop down for the pipework was bang on a double thickness joist one side, so rather than pull a dog leg with benders, one of these gave it just enough distance to rise up past it. Marvellous.
Date published: 2019-05-07
Rated 5 out of 5 by from Quality part Simply does what it says it does. Swapped old for new with no problems had no fitting issues like others have mentioned.
Date published: 2018-12-10
Rated 5 out of 5 by from Super useful - fit to all rads I now fit one of these draining tails to every radiator I fit. If you ever have to work on your heating you'll appreciate the usefulness of being able to easily drain the system at each rad with no mess. Need to change a rad? No problem - close the valves, open the bleed screw and drain it using this tail, then just swap the rad, open the valves and bleed the new rad. No need to drain the system, no freezing pipes, no mess, no fuss. If they were a little cheaper they'd be perfect. If you're fitting a new radiator, or new valves or TRVs, then fit one of these. The amount of time and hassle it could save you in the future is easily worth the cost.
Date published: 2018-10-09
Rated 5 out of 5 by from remove nut and olive if u need the review above had issues with the nut not fitting to the valve he had, why not remove the supplied nut and olive and use the nut from the valve you wish to fit, I suspect that the valve he had was one of those with a course thread that seem to still exist out and about. I have not used these for ages and purchased two this week, they are sooo much better that the similar one that have a radiator key head to undo, they snap or round off! this one has a good slot for a screwdriver and of course you always have one of those in your tool box.
Date published: 2017-12-01
Rated 1 out of 5 by from Not much use This does not screw all the way on to a lockshield valve unless the latter is also made by Drayton (expensive). With a non-Drayton lockshield valve, the tailpiece nut only goes half way along the thread. Drayton technical were useless - no answer on their support line (0333 6000 622).
Date published: 2017-11-08
Rated 5 out of 5 by from Radiator essential Good quality item from Drayton. Essential item to assist in draining radiators. Fits between radiator and valve so may not be a good option on existing plumbing if the extra length needed between flow and return can't be accommodated.
Date published: 2017-07-13
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