I am asking where you can purchase them. We are using a style now that works real well but they are getting old and worn out. These particular flange blank outs were made from casted aluminum, so I know that someone makes them somewhere. They are a blank out that slides onto the flange and are tightened up with a t-handle that has a claw that fits behind the flange itself. No tools are needed, hand tight is all that is required for a 5 minute water test @80-85psi to test seal and casting integrity. I have looked everywhere for these and cannot find them anywhere.
The 1st step to decrease the time spent installing blank flanges is have o-ring grooves cut in your flanges. the grooves should be undersized so the o-rings will not fall out during installation/removal.
We have made them in our own facility, but the time it takes from a production machine is to costly. I figure if you can buy them somewhere it would be nice. certainly machining them is an option, but I am exploring all options. We use these for a production leak test on our pumps. We clamp them on the discharge and suction for a 5 minute leak test @80-85psi to insure that the pump casting and the seal does not leak. Then they go to paint.