White & Chrome Radiator Union Valve Tail 15mm 2 Pack Product Code: 78169

The extendable tail allows increased installation flexibility due to its lateral movement of up to 50mm (2"). ½" radiator connection.


  • Increases Installation Flexibility
  • 1 Year Guarantee
  • Increases Installation Flexibility
Additional Information
Technical Specification
  • Brand : Unbranded
  • Product Type : Radiator Union Valve Tail
  • Total Product Weight : 0.087 kg
  • Model No : RMD-8518
  • Colour : White & Chrome
  • Pack Size : 2
  • Product Diameter : 15 mm
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 2
  • Thread Size : 15 mm
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

Click here to see information on our delivery service



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€8.15 Incl. 23% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
White & Chrome Radiator Union Valve Tail 15mm 2 Pack is rated 3.5 out of 5 by 136.
Rated 5 out of 5 by from Great time saver! These extensions are great - no messing around having to drain the system to re-do the pipework when changing size of radiator, just connect them in and they work!
Date published: 2018-08-17
Rated 5 out of 5 by from Worked for me ! I was replacing an old radiator but the size needed was no longer an off the shelf size, So I was left with a dilemma over what to do until I came across these tails. Well of course I was a little sceptical as to how they would slide to the required position and then seal watertight on a pressurized system. Well when they were fitted (that was so easy) I turned on the supply and just as I expected they leaked!! For about twenty seconds and since then they have remained perfectly dry.. Top marks to these guys they know how to make a usable product that works even for a novice.
Date published: 2018-06-13
Rated 5 out of 5 by from Fantastic Brilliant idea no messing around with ptfe tape or over tightening the olives on compression fitting. Olrings both ends into rad and onto valves,telescopic as well. Fantastic will be using these all the time. Thank you
Date published: 2018-04-14
Rated 5 out of 5 by from Brilliant ideas whoever design A brilliant solution to replacing old radiators or towel rails without having to remove the existing valves and therefore do not have to drain the system
Date published: 2018-03-13
Rated 2 out of 5 by from Not standard size Fit into radiator ok but do not fit standard trv /lockshield (15mm). Nut is larger fitting!
Date published: 2018-02-06
Rated 3 out of 5 by from Good Tails - Poor Description Ordered for delivery as my nearest Screwfix isn’t local. When they arrived I was impressed with the quality of the machining and clever design. Unfortunately this was short lived as the valve connection is the older large 3/4 thread so they didn’t fit my Honeywell TRVs. I really should have checked the downloadable diagram first. Still, it would have been good if Screwfix had made this more clear in the description, hence three stars rather than five.
Date published: 2018-01-18
Rated 1 out of 5 by from Used with a combi boiler This product failed miserably for me. Please don't waste your time with these. I had to return one immediately after fitting, due to a tiny weep at the female thread side. I then returned to find the other side had failed in the same way. I cannot understand why, but i then exchanged and refitted. The valves visually appeared dry with no leaks for months but i was suffering from air locks in the central heating system. I just could not disperse the air. Further investigation found that the extension piece was weeping minutely. I detected this due to switching the system up to it's maximum temperature and watching them very closely. I'm sure there is a reviewer who has mentioned about these not being suitable for pressurised systems, due to the way the extendable piece self seals in some way or another. This information should be captured in the decription if it's true. It could be argued that these were fitted incorrectly, but the other five radiators fitted at the same time are leak free. Just take that extra time to determine the exact extension piece you need. Screwfix never sold them so I had to go to a competitor. Much cheaper and far more robust. Avoid hours and hours of wasted time.
Date published: 2017-12-14
Rated 5 out of 5 by from Great product, crazy name What a boon these are for replacing imperial radiators with smaller metric sizes(within 100mm length). Just remove the old rad, hang the new one and connect without any work to the existing pipework. The telescopic tube even aids installation as you can push it inside the radiator before hanging, then pull it out to connect to the valve. No sealant or ptfe tape needed as both ends have rubber o-ring seals. Like other reviewers, I was sceptical that the seal on the telescopic tube would perform, but no need, they have been in place for a few days now when the CH has been working full pelt in the cold snap, and no sign of leaks. They look smart as well. I did look initially at product 10954, but unlike these, they have no connections for the radiator valve. "Great product, crazy name" - they are all chrome, no white parts at all.
Date published: 2017-12-12
  • y_2018, m_10, d_18, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_136
  • loc_en_IE, sid_78169, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie