It is a type of union commonly used for water meters, dielectric unions for water heaters, and transitions for copper to CPVC.
Overall design is much more important than beam length. A short beam flexes less than a long beam. The trunion mounts can be strong if designed...
WeldrDave did you consider a valve between the tank and filter or the tank and pump for filter change or pump repair.
Keep in mind that these speed calculators are based on maximum RPM's usually 3600.
The best method to keep the hitch from rusting in place is to remove it when not in use.
The height and configuration of your splitter will effect the best dimensions. A starting point for width would be at least 2/3 of the cylinder...
I get my vacuum bag material on Ebay in 50 foot rolls. Less expensive and they work as good if not better than food saver material.
