Bulkhead Fittings

These bulkheads work great and are the cheapest I've found. I found it a little difficult to tighten the outside nut as the flat flange only has 2 notches on it to grasp with a pipe wrench. And if using EPDM liner, make sure the hole cut for the bulkhead is a little smaller than the outside of the bulkhead threading. Pulling the EPDM over the threading and making it flat against the flange ensures a really tight seal. Great product but no instructions.

It's easy to install with small wood clamps to grip the nut and no leaks. The hole saw to make the opening and fits on a drill costs $45. If a router and bit are available, all holes for all different size fittings can be made with a little work to make the hole templets instead of buying $150 worth of hole saws.