How about a simpler solution. Maybe just a long handle? Perhaps with a T
handle to make operating the valve at a distance easier?
You said "completely" covered though so I'm not sure. The thing is it's a
simple valve built into the body of the jack, so setting up a remote valve
is not going to be super easy.
I have taken apart and modified a couple jacks to work upside down.
Doing that I have seen how the valving works. It would be much easier
to do what Jim suggests. The little valve you turn on the jack is in a
chamber with a hole at the bottom, a hole near the bottom, and a hole
with a seal at the top that the valve stem goes through. Turning the
valve stem either puts pressure on, or relieves the pressure on, a
ball bearing located at the bottom of the chamber. This ball seals the
hole at the bottom. When the ball comes away from the bottom oil flows
through the hole at the bottom and through the hole near the bottom
and into the oil reservoir. There really is not much room to add more
plumbing for yet another valve.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.