M202 - Remote Pilot:These models
utilize dual seals in the hydraulic assembly with a bleed-off between the
seals to atmosphere, thus providing a visual indication of hydraulic seal
leakage. Used where contamination of the air motor from the hydraulic fluid
being pumped is objectionable.
M205 - Cooling Jacket: The
"B" models have a bottom inlet connection for convenient tank top
installation or alternate mounting configuration.