On Wed, 7 Mar 2012 02:40:18 -0500, "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.)

You're looking for a way to stiffen your knob? (allright get my mind
outa the gutter)

How about a large custom wingnut at the base. Losen wingnut, adjust,
tighten wingnut. McMaster sells several or make your own.

Karl