Cut a lil slab of leftover teak, made some gaskets and a big plastic washer, and got the raw water intake installed last night finally. It is a 1 piece stainless unit for maximum impact and abrasion durability. (The marelon fitting I almost used felt flimsy and just wrong.) I believe I installed it without any metal to metal contact, not even the threads. Going to continuity check it at some point to see. Have a nice new SS ball valve for it coming in this week to complete my poor man's non ferrous non plastic seacock assembly.