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Product Details

Patented radiator tails. Once fitted between the radiator and the valve there is no need to drain the radiator or system when removing for maintenance or decorating.

Technical Specification
Brand Radmaster
Colour by dominance Chrome
Width (mm) 15
Manufacture ID QBBL650
Type Extension Valve
Size (mm) 15
Size (Inches) 1/2
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Radmaster 650 Isolating Radiator Tails 15mm x 1/2" (Pair) is rated 4.8 out of 5 by 16.
Rated 5 out of 5 by from Quality items Tried other manufacturers options but had issues. Pleased I ordered these items better quality and sturdier on/off making it simple to remove and refit radiators when decorating etc.
Date published: 2020-01-14
Rated 5 out of 5 by from Good Quality and Value. Easy to Fit great for Isloating the water supply to the radiator to remove for decorating especially for tall vertical radiators
Date published: 2019-11-17
Rated 5 out of 5 by from Tails don't wag I have used these ball valves wherever feasible on the new replacement radiators fitted on a room by room whole house refurbishment. The greatest advantage being to lock within each radiator it's fluid content. That equates to less system draining and as the mix includes inhibitor less waste and replacement savings
Date published: 2018-10-16
Rated 5 out of 5 by from Excellent saves draining radiator when decorating Easy to fit great gadget to have saves a lot of time
Date published: 2018-02-22
Rated 5 out of 5 by from Great Product. Makes removing rads for decorating easy . No worries of water everywhere.
Date published: 2018-02-20
Rated 5 out of 5 by from Great product idea Purchased for anew radiator installation and would recommend for every radiator, makes removal for decorating so easy.
Date published: 2018-01-16
Rated 3 out of 5 by from good idea, but not perfect I fitted these to all my new rads, so they can be removed easily, however all the plastic tails had to be replaced with copped after the olives crushed. The copper I then fitted was a very tight fit for some reason, so time will tell if they hold under pressure. Be aware these are not full flow valves, but narrow to 10mm, so may cause a reduced warm up time.
Date published: 2017-12-02
Rated 5 out of 5 by from On&off These were bought to take up the distance difference between imperial and metric,and although the valve end olive looked a bit slack they fitted well and were cheaper than the extensions.
Date published: 2017-11-19
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