Flow-Valves, based at Kruszyn Krajeński near Bydgoszcz, distributes European industrial valves and manufactures its own release and control equipment for fixed extinguishing systems protecting fuel storage tanks, which it describes as the first system of its type in Poland certified by CNBOP. The register lists it as holder of CNBOP-PIB-KOT-2022/0319-1005 for a control and signalling device in fire suppression systems, and CNBOP-PIB-KOT-2025/0428-1005 for regulating and shut-off butterfly valves types PP-PAK-W and PP-PAK-L. The company states it holds Krajowe Certyfikaty Stałości Właściwości Użytkowych for both product lines.