The Spundy is a nice compact spunding valve which is great once you get it working but it isn't quite as easy as it may first seem. Getting the valve onto the post was the first challenge - it appears to be a common problem for people and can be overcome by a little lubrication on the post O ring - if you try to install the spundy without that lubrication you might think it is correctly in place and wonder why there is no pressure showing on the guage even with an active fermentation. The second issue relates to the first in that it at first seems very difficult to set a pressure as it seems to go either to 15 psi or zero with nothing in between. Removing the screw in valve and adding a little lubrication here as well works wonders. Since the Spundy doesn't come with instructions you may think it is either broken or that you are doing something wrong - a little lubrication can solve everything
There was a little problem, put right very quickly and fairly. Good company, and the items I bought as a beginner are adequate for me