you can also use one of these no 91 on page
[DLMURL]http://www.jthandtools.co.uk/cgi-bin/cgiwrap/millhouse/jthandtools/shop/drive?ACTION=SHOP&THISPAGE=page109.html&ORDER_ID=!ORDERID[/DLMURL]!
handy little tool to have
what size flat bit is used or the nipple??? its just occured to me that i have a mini socket set in the van and just need the flat bit!! doh!!! thanks guys....
p.s would still like to have an official vaillant one....and think that they should send them to us f.o.c!!