Foam Bladder Tank

The Foam Bladder Tank is a pressure vessel containing an internal flexible bladder that separates foam concentrate from the surrounding water — using incoming water pressure to squeeze the bladder and inject concentrate into the water stream at the correct proportioning ratio without requiring an external pump or power source. Viking foam bladder tanks provide a simple, reliable, and self-contained proportioning solution for fixed foam suppression systems where power availability may be limited or where system simplicity is a priority. The bladder design prevents concentrate contamination of the water supply and ensures complete concentrate utilization — with no concentrate remaining in the tank after system discharge. Available in a range of sizes and concentrate compatibilities, compliant with NFPA 11 and carrying UL and FM approvals for fixed foam suppression system applications.