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White & Chrome Radiator Union Valve Tail 15mm 2 Pack (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

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White & Chrome Radiator Union Valve Tail 15mm 2 Pack is rated 3.7 out of 5 by 84.
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Rated 5 out of 5 by from A Great Solution Solved the problem of replacing a small discontinued 480mm size radiator.with a 400mm one. These gave a maximum of 40mm each side to fill the void. Effortless fitting with rubber seals to standard non TRV radiator valves. Had dabbled with extension pieces but they leaked, this didn't. Just to make sure recommend using with a sealant such as Fernox LS-X
Date published: 2017-05-01
Rated 1 out of 5 by from They leak! Unreliable! Nice in theory, but in practice they leak around the sliding portions. There are two internal rubber o-rings that should seal against the slideable pipe, but they seep water even on a gravity-fed system and can leak considerably if subjected to a little bit of water pressure and/or sideways movement. Mr Screwfix got annoyed that I returned them with a bit of rusty water because he could have otherwise sold them again to someone who would "know how to use them" - apparently using PTFE tape on the thread has the magical effect of preventing leakage on the sliding join ;-) Even if you can get them to seal from the outset, I would not trust them long-term, or in locations where they might get bumped
Date published: 2017-04-25
Rated 5 out of 5 by from Excellent to replace radiators Wanted to replace an old leaking Imperial radiator with a new metric one and these union valve tails worked a treat. Very easy to install overcoming the gap and also converting from 1/2 inch to 15mm. Cannot recommend highly enough.
Date published: 2017-01-02
Rated 5 out of 5 by from convert imperial to metric rad These are ideal if fitting a metric radiator in the place of an existing imperial sized one. They have the older style large nuts which fit older valves, so just turn off both valves crack the nut on one side of the radiator, catch the water that comes out and swap the radiator without draining the system. I had one small leak because the new rad had a sllightly different angle and this stressed the joint.
Date published: 2016-12-04
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Are these suitable for use in a combi system?

Asked by: Vince86
Hello Vince86, If you question is regarding can this be fitted on a radiator used in a combi boiler system then this product would be suitable for use. For any other use we could not comment on whether this product is suitable as it made specifically for use on radiators. Thank you for using Q & A.
Answered by: Dcoz
Date published: 2017-01-16

This doesn't fit a standard size TRV. Is there an equivalent that isn't 1/2 inch?

Asked by: Lingalong
Hello Lingalong, Our alternative valve tail is a 15mm compression valve tail, Product code (10954). Here's a link: http://www.screwfix.com/p/radiator-compression-valve-tail-15mm-pack-of-2/10954 Thank you for using Q&A.
Answered by: LMac
Date published: 2017-05-15

Are the olives included?

Asked by: TMS27
The Olive is included on one end where the Nut is, and a rubber washer on the threaded end.
Answered by: yeldarb
Date published: 2016-10-28

How do you ajust the length of the tail?

Is the ferrule for the valve connection loose on the tail?
Asked by: Esore

How do you modify the length ?

The Tail has 2 flared ends so it seems you cannot change the length but reviews say it is easy to modify. If I cut one end, which one, and will it affect the sealing ?
Asked by: kingcol
No need to cut, the stem just slides into the radiator. Not installed mine yet, still be be convinced it will seal but I think it is intended to.
Answered by: Jason27
Date published: 2016-10-09
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Specification
Colour White & Chrome
Manufacturer Guarantee 1 Year Guarantee
Model No RMD-8518
Pack Size 2
Pieces in Pack/Case 2
Product Diameter 15 mm
Product Type Radiator Union Valve Tail
Thread Size 15 mm
Total Product Weight 0.087 kg

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Instruction Manual