Ignoramus8530 fired this volley in
:

Can I
add another spool valve to handle these two functions (lift and
extend)? Would that be "in series" with the original spool valve?


Ig, unless the valves were actually custom-built by/for the forklift
company, they are probably "power beyond" valves. That, because some of
their lifts probably did come with accessories that needed extra valves
beyond the lift control. (BTW, you didn't say anything about the
traction drive... does it _get_ power from the lift valves or supply
power to them, or is traction on a different circuit with separate
traction pump?)

Lloyd