The filter itself is bulky, offers this insight that the pump draws air somewhere. As such, a good product. If you have smeared the o-ring and the threads with Vaseline, you get the whole thing apart again (to clean). The only thing that bothers me are the cheap plastic fittings that connect filter and pump. I'm rather a fan of brass fittings - are stable and keep almost forever. Can one indeed for the 20 euro upgrade. Otherwise, the filter Okay!
