Is VACTEC FM approved, and when should I choose a vacuum system?
VACTEC is a vacuum-based Integrated Fire Protection System family used for dry pipe and preaction applications. FM approval is documented for specific configurations, and it is selected when water delivery performance and vacuum-based supervision are desired.
Yes—specific VACTEC configurations are documented as FM approved assembled units. Choose VACTEC when the project benefits from vacuum-based supervision and the approved application matches the design.
What the vacuum option means
VACTEC uses closed vacuum sprinklers specified for vacuum service and a vacuum pressure controller that supervises vacuum conditions and controls the vacuum pump.
When to choose it
Choose VACTEC when:
- the project is evaluating vacuum dry pipe or vacuum preaction,
- water delivery performance is important,
- freezing-area protection is needed on the system side,
- the approved design basis supports vacuum technology.
Important environmental limitation
FireFlex documentation also states the VACTEC cabinet itself is not designed to be installed where it will be subjected to outdoors and/or freezing conditions. That means the protected piping application may suit freezing-area hazards, but the cabinet location still has to respect the manufacturer’s environmental limitation.
Compliance point
This is a good example of why system type and installation environment must both be checked. A code-compliant sprinkler strategy can still become non-compliant if the cabinet is installed outside its approved location limits.
Frequently Asked Questions
Is VACTEC for outdoor installation?
No. The cabinet documentation says it is not designed for outdoor or freezing exposure.
Can VACTEC be used for preaction?
Yes. FireFlex documents vacuum single interlock, non-interlock, double interlock, and fail-safe variants.
Why choose fail-safe vacuum options?
Choose fail-safe arrangements when the design intent favors added release assurance under abnormal conditions.