Had a problem with the wifes Tefal superglide, Cleaned the anti-calc valve and other cleaning steps in the manual. Just tried again with the water filler flap open and it steams ok. So i decided it must be a problem with the flap. It was! There are 2 rubber seals in the flap. I took these out and gave them a wipe and put back in and all seems ok. Hope this helps
James, December 2009