Deluge Valve, it is used to control water flow in systems that use foam, deluge, and pre-action. The outlet chamber and system pipes are kept dry by the valve being held closed by system water pressure that has been captured in the priming chamber.
A Jockey Pump is a little pump used to keep pressure in the sprinkler pipes of a fire sprinkler system. This is done to make sure that if a fire sprinkler is turned on, there will be a pressure drop, and the jockey pump will turn on to counteract this pressure drop.
The temperature rating of the sprinkler is indicated by the colors. The maximum ambient ceiling temperature and the occupancy classification must be taken into account when choosing the sprinkler with the appropriate temperature rating. Sprinklers are actuated by heat, so if the maximum ambient ceiling temperature isn’t taken into account, it could result in unintentional sprinkler activity. The frame arm, deflector, or coating material will typically have some color indicating the temperature rating if the sprinkler does not have a glass bulb.