Thank you all for your suggestions. One thing I am guilty of is OVER ANALYSING and being a research nut. During an RV Show, I asked a parts supplier what I would need to empty the tanks with 2 macerating toilets. They told me a clear cap and with a hose connection and let gravity do it. So, I bought a clear Valtera for $3 on Ebay and the sewer adapter from Sanicon. All I need now is the hose.
After many trips to Home Depot, Lowes, Amazon, and endless Google searches I found trying to find a 3/4" hose that was reasonable was impossible. I have a 3/4" water hose but trying to wind it to a reasonable size for storage was impossible.
Thanks to the discussion here, I realized this design may or may not work. I even thought of purchasing a pump to push it along the hose but that wasn't practical.
All that said, I ordered the 25' Sewer Solution extension and the Jet Cap unit. Now I have a complete Sewer Solution system. Since this is designed to work with non-macerated output I should be more than OK! I'll leave the grey tank and black tank closed most all of the time. When it is time to leave the RV site, I will dump both.
Best case, I open the black tank and it drains perfectly through the 3/4" hose. Worse case, I will see it struggling and help it along with the SS Jet. Either way, I am thrilled I don't have to struggle with the 3" pipe.
One thing I am learning... Being a Rube Goldberg is OK for some things and not so smart with others.
Thanks again ...
Mike
