Very interesting and informative, Niksch, thank you. Were there many variants of this model of the late 40's with the same clip and barrel ? One sent me pictures of a 134 from the MB book very similar but with the cap band engraved. These caps were not engraved along the side like many other models ?
131-420 FRONT 131-420 REAR AND SIDE PROFILE. SEA-FIRE FIRE SUPPRESSION SYSTEM MONITOR WITH ENGINE SHUTDOWN CONTROL AND HIGH TEMPERATURE ALARM. Part No. 131-420. ELECTRICAL CONNECTIONS. Connect the plug on the back of the panel to the. corresponding plug on the Sea-Fire ESRS shutdown unit. Connect the blue wire to one of the temperature sensor. wires.
Use the CMD-4MR carbon monoxide detector for single sites when generator shutdown is NOT desired. 12 VDC operation. Features a state-of-the-art sensor that is unaffected by common cleaning solvents. Lowest current draw of any Fireboy-Xintex CO Detector. UL 2034 Listed for Marine use.