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Self Cutting Drain Off Cock 15mm

4.5 (48 reviews)
SKU: 260223155537429 EAN: 5060166490355

Compare 1 price for Self Cutting Drain Off Cock 15mm — from £4.89 across 1 UK seller including Toolstation.

£4.89 5h ago
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Customer Reviews 48

4.5
48 reviews
5 star
34
4 star
8
3 star
3
2 star
0
1 star
3
Self Cutting Drain Off Cock 15mm
4.0
February 8, 2026
Cas2 Verified Purchase

Good product works well little over priced but very easy to fit

Self cutting Drain Down Cock. Brilliantly useful
5.0
October 19, 2025
39b2d82d-8339-5208-a044-1067747ea0ee Verified Purchase

A really useful and convenient way to allow draining down of a central heating system, when some numpty has not fitted a drain down cock.
I couldn't find it in current catalogue, but new you stocked them.
This time I need the 22mm adapter. Works brilliantly.
There is also a compatible 3/4" fitting. The add in and washer tap fittings provide a flexible system.

Handy bit of kit
5.0
June 8, 2025
DrDD Verified Purchase

This gizmo got me out of a fix when I had to replace a weepy joint on the heating. Once zone valvesoff, this drain enough to fix problem.

Handy Tool
5.0
March 27, 2025
Stu02 Verified Purchase

Handy kit allowing fitting of drain to pipework without having to drain down system. I used on a system which previously didn’t have a drain. Used in conjunction with 22mm adapter kit.

Instant drainplug
5.0
March 5, 2025
Godxyon Verified Purchase

Fantastic little bacon saver. The drain plug insert on my Father-in-laws hot water tank sheared (not me) which made it impossible to drain out the 120L of water to install a new low level immersion element. This little beauty with its 22mm pipe adapter (sold separately) saved the day. It took only about 5mins to install and we were off without a single drop spilt. My installation advice would be to not overtighten the clamp as it has a rubber sleeve with a curved end which acts as a gasket to the pipe. I tried to install the clamp first and discovered that the rubber deformed upon tightening which may have made threading in the plug difficult. Instead install the clamp hand tight with a screwdriver then thread in the plug with its cutting end until it contacts the pipe. Then tighten the clamp before winding in the plug. It will be firm so you need to use a spanner to tighten in. Not a single drop of water was split and was such a good experience that I will likely simply leave this inplace rather than repair/re-solder a new drain. Wonderful invention.

Works very well
5.0
January 31, 2025
Blooming Verified Purchase

Good product, easy to install. Good solution if you need to drain system down

Perfect if there’s no drain off fitted
5.0
December 15, 2024
techdude1 Verified Purchase

Excellent if there’s no drain off fitted , I would have had to drain a radiator and connect onto the valve to drain the system I had to work on. Doesn’t look that great but it could be removed and the pipe replaced if needed. But otherwise very convenient

Good but could be better.
4.0
August 11, 2024
Glyn Harwell Verified Purchase

Did a reasonable job although care is needed to ensure the rubber gasket does not block the fairly small aperture in the drain valve.

It was easy to use and useful to drain before added a drain off point
5.0
June 5, 2024
Hogsidecar Verified Purchase

I used these to drain a central heating system and then removed the valve and soldered in a permanent drain off point.

Just the job
3.0
April 15, 2024
B Tet Verified Purchase

So easy to use. No leaks at all. Just what i needed

Made an impossible job easy
5.0
April 4, 2024
7060sdnd5ey3lilxbg8s4dryw Verified Purchase

I didn't have an easy way to drain the system as the kitchen radiator (with a drain cock on) had been removed, and I needed to drain a 22mm pipe in the loft so I also bought the 22mm adaptor piece. I thought there was no way that the self cutter would work without spraying water everywhere, but there wasn't even a drop of water when cutting into the pipe, and it was only when I opened the drain cock when the water came out, nice and controlled, and was great to be able to fill up a bowl, turn off the drain cock, and empty the bowl into a bucket, then fill the bowl again etc. until the section of pipe was drained.

Brilliant
5.0
March 4, 2024
DMCC Verified Purchase

Does exactly described. East to use and gets you out of a situation in seconds.

Self cut drain cock
5.0
February 20, 2024
Pip Piper Verified Purchase

Got me out a fix as needed to drain down system to fit a new radiator that had no drain cock fitted and this product allowed me to do it

Did the job
4.0
February 7, 2024
Justin plumber Verified Purchase

Good price, was in stock. Quality is good and allowed me to fit a drain off point as old one had seized

Didn't let any water out!
1.0
December 29, 2023
Ted copple

Even though it punctured the pipe only a dribble of water actually came out even with the tap fully open. As it was my only option on a heating system this wasn't ideal.

Very happy.
5.0
October 30, 2023
Martin Brain Verified Purchase

Very good price and much simpler to fit than I expected. Only took 5 minutes. Very happy.

Self Cutting Drain Off
5.0
October 27, 2023
Stephen39 Verified Purchase

A good quality product and very easy to fit without any pipe cutting or soldering required.

Problem solution
5.0
October 17, 2023
Ned 2 Verified Purchase

The Self Cutting Drain Off Cock is a brilliant product - enables you to drain a system when the existing cock doesn’t work or was omitted by an installer.

Perfect for draining a heating system down with no mess.
5.0
August 22, 2023
Gas Force One Verified Purchase

Easy to install when there’s no way of draining the system down quickly with no mess.

.
5.0
July 23, 2023
zyx Verified Purchase

Easy to use and does the job just as a soldered unit but without the extra pipe work

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