Suitable for air quality to ISO 8573.1 Class 4: dirt, water and oil High flow - Up to 2.4 Cv Working pressure up to 174 psi / 12 bar Used to close safety valve actuators to isolate potential fuel sources from fire Designed specifically for high flow system vent Bulb offers clear indication of valve status Wide range of melting temperatures - from 57ºC up to 260ºC (frangible bulb) Ideally suited for emergency shutdown systems, automatic trigger lines of deluge systems and pneumatic shutdown loops of wellhead systems