the two three-hose things are two Y-valves, allows me to use the Henderson pump to pump the tank overboard. They are mounted backwards with the valve stems through the bulkhead into the head compartment, I machined up a couple of handle extensions so they can be operated from that side. The canister on top of the home made vent loop is a ball check valve. I am using the 1" vent hose at the top of the loop as an extra tank vent (per Peggie Hall's instructions) but there was concern that if there was a downstream clog and an enthusiastic pump operator that effluent might squirt from the vent. The ball check will prevent that, though it does not block air.

No website, I kind of have one built but have been to lazy to get it up and live. Someday.....