Hi, We need to presurise our Vaillant Ecotec 24, but for some reason there doesn't seem to be a handle on the valve? Any tips on how we can presurise? I've posted a picture for reference.
Ah that makes sense, thanks!. I tried a flathead and I could turn the bottom valve and nothing happened but I couldn't turn the top one. Possibly because the thread is a bit mangled. Here's some closer photos. Any tips on handling a slightly butchered valve, also welcome!