I replaced an old 1990s(?) vintage Xintex S-2 propane system with the latest (2019) Xintex FIREBOY SYSTEMS P-1BS-R Propane Detector w/Sensor & Valve (single sensor) system. The reason for working on the system was that the propane solenoid valve located at the tank in the cockpit locker had failed open, which is not safe. I think it probably corroded over the years and then would not close one day on a 2019 cruise. I decided to replace the old system completely but not due to any particular...