But as I said earlier I just fitted the new seal kit which means new poppet valves and springs so its not going to be those - which means according to the guide it can only be the spool valve which means the unit is probably scrap as they don't make parts
for it any more.
I've emailed Katadyn
US to check if they have any bits left but as yet no reply.
Anyone here have an old manifold they don't want or a pump broken in a different way that I can scavenge parts
from? Perhaps someone who took the upgrade from 35 to 40 offer Katadyn
did a few years back has the old bits from their 35 that aren't used in the upgrade?