reassembly

Hopefully someone can help.... I've taken apart the 722.4 transmission on my 95 e300 d as I suspected there was a B2 problem. I found this instruction book: http://avtopedia.ru/akpp/722-3%20722-4.pdf Now, on page 47, it refers to one way valves (item 49), but I can't see any one way valves...

hi i have reassembled my lift pump but i'm now concerned whether i've done it correctly.... i have serious vaccuum now in the tank and the fuel is getting sucked back in.... i wonder if i've fitted the non return valves in correctly. how many loose non return valves are there in addition to...