Good & Bad
The inline valves on this boat ( top right in the photo) suffer from mismatched and poorly chosen alloys. In addition, using the thru- hull nut at the bottom does not provide adequate support. Just to the left, a new proper seacock is being installed. The wide flange base provides excellent support, and the fiberglass pad beneath it reinforces the hull and makes it possible to screw the base into the backing pad. In the process of installing the new fittings, the hose that provides seawater to the shaft seal flexed and the connecting nipple snapped off. The pink color indicates decomposition of a brass fitting. If you look closely you can see that the opening itself has become blocked, restricting the flow of water needed to cool and lubricate the bearing. Good preventative maintenance calls for removing this hose annually to check the condition of the pipe fitting and to confirm a healthy flow of water with the engine running.
We’ll award the new seacock installation The Right Stuff stamp of approval. As for the rest, well, let’s just say it pays to do it right the first time.