Oxeo Extinguishing System blocking / lock out device is used in environmentally responsible Oxeo inert gas suppression systems, an FM Approved and cULus Listed solution utilizing either argon or nitrogen to protect Class A, B and C fires (with argon being suitable to protect Class D fires). The Oxeo blocking / lock out device is designed for use in inert gas fire extinguishing systems. The shut-off valve is used for flow control with electrical monitoring of the flow condition. Utilize innovative design tools “Oxeo System Estimator” or “vInert” to specify your entire system! The many components to a full Oxeo Extinguishing System are available at Viking. Ask your local rep about the possibility of putting together a kitted solution.