Marine Fixed Fire Suppression System

[@mrkattm]

Is the pressure switch normally open or normally closed while there is pressure in the bottle?

[@workinonaboat1950]

Depends on the manufacturer. One uses a normally open the other a normally closed.

[@workinonaboat1950]

Here's a link to the our very first video about fixed fire suppression systems th-cam.com/video/QzqAtRCjwn0/w-d-xo.html