Tyre valve broken off?

Hi
Wnet to take the bike out yesterday and the back wheel was flat so got the punture repair kit out and went looking for a punture couldn't see one on the tyre so I decided to pump it up and realised the valve stem had broken off the bike and was on the ground beside were it was parked pretty unusal so I just thought I'd ask has this happened to anyone else on a superduke or any other bikes you've owned in the past?

where is your bike stored? could vandals be responsible?

It doesn't look vandlised just looks like corrosion and then it got a knock was lucky it broke while the bike was parked up. It's the standard from factory valve stem so I don't really know it get it replaced in the next few days

I've seen it happen with rubber stems. Kinda scary knowing the metal could do the same.

will post up a pic of the stem tomorrow

Change the valve/Valve stem every time you fit a new tyre, I would not use right angle valves on a motorcycle again, You can also buy high pressure rated valves which are much stronger (what I use)
Check the valve / stem you fit meets the SAE 1205-1206 standard to and if you value your life not made in China

A recall notice affecting as many as six million Chinese-made automotive tyre valve stems has been issued as of May 30, 2008. The defective tyre valve stems were made in China by Shanghai Baolong Industries, and were distributed in the United States to many independent tyre dealers by Tech International of Johnstown, Ohio. The defective valve stems were manufactured from July 2006 to November 2006, and were installed on vehicles in the U.S. from January 2007 to July 2007 (or possibly later).

Motorists who have had tyres replaced or serviced in 2007 are warned to inspect their valve stems for cracks or leakage.

Examine the valve stem and flex it in a circular motion with your finger. If you see any visible cracks or hear air hissing (leaking) from the base of the valve stem, the valve stem is defective an must be replaced. Failure to replace the valve stem may cause the tyre to lose air or suddenly go flat. Sudden loss of air pressure at highway speeds can be very dangerous, and may cause the driver to lose control and have an accident or rollover!).

There are no external markings on the valve stems to identify their source, so the only way to know if the valve stems on your vehicle are those involved in the recall is to have your tyres dismounted so the numbers on the bottom of the valve stem inside the wheel can be read. The part numbers affected by the recall are:
TR-413
TR-413CH
TR-414
TR-415
TR-418
TR-423

The Chinese really dont care if you die, they already got your money

Its the factory original so hope its not a cheapy chinnesse one but who knows pictures as promised.

Looks like you had bit of luck the valve failed when the bike was parked

That looks like its been eaten by good old road salt

Better check the front one to

Are you putting it down to the luck of the Irish

I wonder what the weather has been like in your area of late. If that lockdown nut was too tight is it possible that the heating and contraction of the wheel has caused a stress fracture (metal fatigue) ?