We have a plastic hot water urn that we use for making cups of coffee. It 
has been giving good service for several years, but recently the tap has 
started dripping.  I would like to fit a new one, but I have no idea where 
to get a replacement. It is like the taps you see on mineral water 
dispensers. (This sort of thing 
http://www.watercoolersdirect.com/water_coolers_office/mains_office_water_cooler.html)


Any suggestions for spares, please?

 Thanks

Geoff