On Mar 26, 9:31*am, Phil wrote:
I'm looking for a support to locate and hold a PVC sleeve in the center
of a Sonotube while pouring concrete around it.

Perhaps two plastic rings, one that fits inside the Sonotube and one
that fits around the sleeve, connected by radial members separated by
120 degrees would do the job.

Has anyone encountered a device that accomplishes the objective? *I need
about 100 of these.

Whatever scheme you choose, use something compatible with the
concrete, not plastic. For example, some simple steel wire could be
wrapped around the PVC one turn in the middle and cut to the length
needed to hold it centered. Might take two pieces for best centering,
but it would be quick and easy. The steel and the concrete will work
well together, like rebar, you know. HTH

Joe