Tom Gardner wrote:
I have a flow control valve like this:
http://www.grainger.com/Grainger/PAR...789?Pid=search
It controls the speed of a 2x10 cylinder and the movement of the cylinder
and mechanism is making the adjustment knob move so the cylinder gets faster
and faster. It does have a set screw that will lock the adjustment knob but
the operator needs to change it often and during the stroke. Is there a
simple way to stiffen the knob without locking it? (Yes, I could get a new
one.)


Remove the knob and install a lever that the operator can just slide
back and forth to adjust?
Or maybe take the knob off, drill through the setscrew hole to create a
second hole on the other side, then install a couple nylon setscrews
that you can tighten down so it is stiffer.
Or pull the knob off and see what they use to keep the valve from
leaking through the stem, if it is set up like some are you can probably
tighten it some there.

--
Steve W.