What do electric release and pneumatic release mean, and when should I choose each one?
Release type defines how the system trim is actuated: by an electrical signal or by pneumatic detection/pressure logic.
Electric release
Meaning: The system uses an electrically actuated solenoid valve controlled by a listed releasing control panel and compatible detection devices.
Choose electric release when:
- The project uses electrical fire detection such as smoke or heat detectors
- You want strong integration with a releasing control panel
- The design is based on detector-operated release logic
Pneumatic release
Meaning: The system uses air pressure or a pneumatic release network as part of the operating logic.
Choose pneumatic release when:
- The design specifically uses pneumatic detection or pilot logic
- The project standard or hazard calls for pneumatic operation
- The designer prefers a non-electric release path for the trim logic
How to decide
- Choose electric when detection and release are meant to work through a fire alarm/releasing panel
- Choose pneumatic when the system is designed around pneumatic actuation or pilot-line logic
Important note
On some system types, release combinations can become more specific than just electric or pneumatic, especially on double interlock systems. In the selector, the simple electric/pneumatic choice should always be matched to the approved configuration for the selected system type.
Frequently Asked Questions
Is electric release the same as having a panel?
Not exactly. Electric release describes the release method. The system style determines whether the panel is included or provided separately.
Is pneumatic release only for deluge?
No. Pneumatic release may also be used on certain preaction configurations.
Which option is more common for detector-based operation?
Electric release.