Stormsure Adhesive, will glue all kite bladders and will glue valves back on.
High strength flexible adhesive, great for valve repairs! Best left overnight to fully set. Once the tube is opened the glue will "go off", so thats why it is sold in small tubes, and larger ones. A 5 gram tube is enough to do a few valves or a smaller repair, If you need to do a lot of valves then get the 15g tube. Squeeze the tube so there is no air inside once you put the cap back on and store it in the fridge to maximise its life.