Our SAFE COMBI series are changeover valves for safety valves in tandem, and can be fitted with or without a rupture disc for greater atmospheric safety. They include an intermediate vent manifold valve for draining product. A tandem of safety valves requires a safe operating system that always keeps one of them in service without blocking; we work in a fail-safe environment. An ideal combination with our ARI REYCO safety valves – ASME Sec. VIII – in power and oil & gas plants.