The key feature of lockable line valves is a simple locking device that can either lock the operating lever in the open or closed position. They offer excellent, leak free connections as soon as they are joined to the corresponding pipe work, making them extremely safe and easy to use. Clients also have peace of mind from knowing that all units are tested prior to distribution. They are also available in a range of sizes to meet individual needs, ranging from 15mm to 108mm.