The TFA series filter only can be installed on the top of the tank; the filter bowl should be under oil level. The other capability is similar to TF series, but TFA series don't have a check valve.
TFA-25L-Y/C
TFA-40L-Y/C
TFA-63L-Y/C
TFA-100L-Y/C
TFA-160L-Y/C
TFA-250L-Y/C
TFA-400L-Y/C
TFA-630L-Y/C
TFA-800L-Y/C