I have been reading through this and given the answers I got on my endeavor in my other threads, I need to ask another question. I can mount my Fill-Rite RD 8 vertically on my barrel, but saw someone turned a 90 from the top and had the pump on a board on top of the barrel. Looking at the plastic barrel and the reducer bung, the weak link is actually the top of the barrel around the fitting. I got thinking of the stress of the filler hose leveraging the pump mounted vertically as shown here
http://www.fillrite.com/ProductCatalog/4089.pdf , (photo, bottom right hand corner mounted to barrel of the pdf) . I am thinking now of using 316 SS 3/4 fittings (stainless steel) and turn a 90 out of the bung, use a cam lock set of fittings into the pump (for quick disconnect), and mount the pump to a board that fit the elevation of the 90 and will rest on the tank top. Then the only leverage is a turning motion the fitting will take and give if necessary. The cam lock fitting also will give a bit too. I am thinking of using SS fittings to prevent any rust over time and they are stronger than brass or aluminum, at least I think they are.
Am I overthinking this? Thoughts?
Bottom line this whole set up can be moved to a larger tank later if needed.