Around 800 line blinds from 2 to 20” 600 rating class 600 are installed on natural gas networks. Nodal or compression stations are equipped with ONIS Line blinds which permit to absolutely isolate decades of kilometers of pipes for maintenance or rotating equipment in compression stations. ONIS equips cold flares and scrapping / pigging stations in order to secure the quick opening door operation and the wasted collector drums. ONIS line blinds technology is compatible with propane and butane as well as hydrogen transportation.